Sequencers, Midi and Music Software A "Sequencer" is defined as: a circuit, device, or software which records and stores performance information so that it may reproduce the performance; a sequence recorder. the Rock Synthesizer Manual I. Sequencer History ==================== a).Analog sequencers Sequencers have been popular in electronic music since Dr. Robert Moog introduced the System 55 synthesizer in the late 60's. This type of sequencer was known as the analog sequencer, due to the setting of a number of continuously variable(analog) potentiometers to derive pitch. In Dr. Moogs' original design, a bank of 24 analog potentiometers could be tuned individually, each producing a control voltage that was then patched to the sound producing circuitry of the synthesizer. A variable clock would step the sequencer from one potentiometer to the next, starting over again once it reached the last position. These voltages, when patched to the inputs of his voltage controlled oscillators, would produce varying pitches. A repeating sequence of notes resulted and hence the device came to be called a sequencer. This original sequencer had twenty-four pots, so you could have a maximum of twenty-four notes or eight three-note chords sequence over and over again. An example of an eight note sequence is the droning pattern heard in Pink Floyds' "Dark Side of the Moon" recording of some years back. Although other companies introduced stand alone versions of analog sequencers about that time as well, Moogs' design is usually thought of when the term is mentioned. b). Digital sequencers About 1975, Oberheim electronics introduced the DS-2, a "Digital" sequencer capable of remembering one-hundred and forty-four notes. Although it was only a monophonic device, the attraction to this type of sequencer was that notes could be entered in both "real time" or "step time" from the synthesizer keyboard. This was of great interest to composers who would prefer to play notes in from the piano keyboard, rather than having to painstakingly "tune in" one note at a time with a potentiometer. This unit had the capacity for three sequences that could either be played back independently or chained together to play in turn, but there was no means of permanent storage for anything loaded into the device. Since all information was stored in a "volatile" RAM memory, everything was erased when power was removed. Shortly thereafter, Roland, a young company known mostly for their drum machines, introduced a digital sequencer known as the MC-8 Microcomposer. This was the first of many automated devices from the Roland company and was considered to be clearly ahead of it's time. This device allowed precise entry, editing and playback of a multiple of parameters including; control voltage, step time, gate time, portamento and volume or modulation settings. It was one of the first devices to implement tape storage/back-up functions, which is on nearly every synthesizer/sequencer on the market today. Although it could be accessed from an external synthesizer for entry, manual step time entry was the preferred method. It had an extremely large memory for that period i n time, 1200 notes, with an optional 16k upgrade that allowed over 5000 notes. Designed for use with Rolands' modular studio synthesizer, the MC-8 was a giant step forward for electronic music. An example of the precise step entry method with the later version MC-4 is the complex synthesizer solo of Totos' hit song, "Rosanna". Using the control voltage scheme, polyphony was difficult to achieve without the use of a modular synthesizer containing several oscillators. Given even that, composers could enter only one single note passage at a time. c.) System Common What was needed was a system with which a composer could play polyphonic parts into the sequencer from the synthesizer and have it play back verbatim. Determined to solve this problem, Oberheim Electronics introduced in 1979 a new sequencer designed to wo rk exclusively with their OB-8 synthesizer, the DSX. The DSX allowed eight note polyphony and full synchronization with their new drum machine, the DMX. This was a great breakthrough, and together these units would allow a composer to generate fluid and complex musical passages that could be edited, looped, quantised, cut and pasted and heard with percussion. Soon thereafter, Sequential Circuits followed suit and introduced a polyphonic digital sequencer for their Prophet V and Prophet 10 synthesizers. This unit was the first to utilize a disk drive for storage of song files. II. MIDI ======== Manufacturers were now slowly responding to performers' requests to find ways allowing instruments of one brand to communicate key information with others of different brands. The control voltage technique was unsatisfactory because a separate communicati on line was required for each notes' information. Also, there was no universally satisfactory standard for this data transmission among the various manufacturers. Digitally controlled oscillators were just beginning to appear in units such as the Roland Jupiter 8 and the Korg Poly Six. Since key information was transmitted in the form of a number instead of a voltage, more efficient handling of the data was possible. If all manufacturers were to agree on the type, rate and size of the transmitted data for each key depression, theoretically any keyboard could trigger any other. So, in 1983, with mutual cooperation between Roland, Sequential Circuits and Yamaha, the MIDI specification was born. The Midi spec provides for the transmission of a number of performance parameters including: note-on, note-off, velocity, aftertouch(pressure), and controller data, such as: pitch bend, modulation wheel, sustain pedal and others yet to be defined. The original intention was merely to decide on a standard that would permit transmission of data from one synthesizer to the next, regardless of brand. Also provided for was a channel system to permit remote selection of instruments. It was soon realized, however, that since this data was in a form that could easily be handled by a computer, great amounts of musical information could be stored and manipulated with a microprocessor and RAM memory. III. Midi Recorders/Dedicated Computers ======================================= The term "sequencer" was now rapidly becoming out of date, since users were no longer restricted to a small amount of notes repeating over and over in a pattern. This new type of device would be dubbed a "Midi recorder". Manufacturers rapidly began to design hardware sequencers(or dedicated computers) to accompany their synthesizers, encouraging the user to begin forming a Midi instrument network. One of the first MIDI recorder/dedicated computers to appear was the Roland MSQ-700. This unit could store over 6500 notes for up to 16 channels in its internal memory. It had eight multi-channel tracks which could be recorded in real or step time. These tracks could be linked together in up to 73 repetitions in order to form a song. Also by Roland was the MSQ-100, a lesser expensive but very capable Midi recorder. Since that time Yamaha and Korg have introduced hardware sequencers. A tape storage back-up interface was also provided for these units to permanently store song data for later retrieval. The advantage of a dedicated computer such as this is the convenience of portability and ease of use. Also of mention is the inherent ruggedness of a 'made for portability' unit. The disadvantage of these devices is the limitation of expandability of memory and functions. IV. Computers and Midi ====================== The idea of using a micro or personal computer for the task of recording, playback and editing of Midi events has recently become very much in vogue due to the general public awareness of the personal computers' value in other tasks. Musicians cannot rat ionally ignore the vast potential the personal computer offers and sees the opportunity to combine a variety of applications in one machine. Personal computers come in several different types and with a varying amount of user memory with each. In order to make an intelligent decision on which computer to purchase a user must decide what software is currently available for the tasks to be per formed and what price point will be within his/her means. Among the least expensive, but well suited to Midi applications is he Commodore 64 and 128 computers. While still lacking the power of more expensive units, this computer has quite an admirable collection of Midi software available for it. Although 64k of memory was the maximum available for many personal computers of the seventies, the Midi data format only allows about 5000 events to be recorded into this amount. Next in apparent popularity was the Apple II computer. Able to display an 80 column screen and with expansion slots for adding accessories, this computer was a big seller to many schools and individuals interested in personal computing. An equal amount of Midi software is available for the Apple II as is the Commodore. Although the Apple II is a much more expensive computer, the Midi software for it remains on about the same level as the Commodore. Moving up through the ranks and into the eighties, the introduction of the Apple Macintosh showed much promise as a musicians computer as well as a business machine. Even so, software for Midi and business applications was slow in coming for the Mac. Pre sent day applications have proven that the Mac is indeed one of the best for use with Midi. The IBM-PC had established itself in the early eighties as the machine of choice for inexpensive business computers and was appearing on the desks and in the homes of thousands of middle class information workers. This computer is only now(1986) beginning to show promise as a musician's computer, largely due to the fact that an enormous amount of work-alike "clones" are appearing on the market at a price that is well within the budgets of serious music hobbyists and performing musicians. Since (1.) the bulk of modern business software has been geared for use on the IBM and compatibles, and (2.) the wealth of peripheral equipment easily attached to the IBM is expanding at at an alarming rate, music software developers have naturally turned to this unit as a "standard" for which a very large market is already established. Two new entries in the marketplace are showing much promise; the Commodore Amiga and the Atari 520 and 1040ST. These computers are of the 32 bit variety like the Macintosh, and are in a very affordable price range. The software development for these mach ines is being approached very cautiously as each companys' future is dependant on their success. Developers are wary of investing the thousands of hours necessary to develop Midi software for a machine that has an uncertain future. As of this writing, to my knowledge, two companies have music software on the market for the ST and only one for the Amiga. This is very disappointing, especially in light of the fact that the Atari actually comes equipped with a Midi interface as standard equipment. Both machines share the same main processor as the Apple Macintosh for which there is a very nice software catalog to choose from. V. Music Software ================= Even though a special purpose computer designed exclusively for Midi recording tends to be easier to operate, the flexibility and open architecture of a personal computer could far outweigh that single advantage. With the ability to provide full screen gr aphic displays of Midi events and even musical notation for editing, not to mention the storage capacity, the personal computer is a natural choice for professional and novice composers alike. Even so, software writers who understand the musician's needs are very scarce, so it is only natural to see the development of powerful, easy to use music software as a slow process, growing more sophisticated as the writers and the market mature. a.) Software sequencers One of first companies to produce music software was Passport Designs. Their first offering grew from the experience gained with their non-Midi Soundchaser synthesizer/software system they had developed for the Apple II in the early eighties. Passports' first package was called MIDI 4, and was developed for the Apple //+,//e and Commodore 64. This software allowed 4 channels of polyphonic Midi recording/playback, but with a bare minimum of editing capability. Each track could be looped continuously and manually punched-in and out for recording, but single note editing was yet to be implemented. Tracks could be merged together, but the resulting track could only be sent out on one Midi channel. This meant that only a total of 4 Midi instruments could be played at a time, a serious restriction in that Midi allowed for up to 16 discreet channels. Although not as full featured as many musicians would hope for, the feedback that Passport and other would-be Midi developers received from this pioneer product prompted more research into the possibilities of more powerful music software. Another company that had introduced music software about that time was Cherry Lane Technologies, previously known for their large catalog of sheet music and books. The packages they were offering were independently developed but nationally distributed by Cherry Lane. Among these was Texture, by Roger Powell. Roger had gained a lot of experience in the sequencer field by working with the band Utopia and it's leader Todd Rundgren. Realizing that most songs he played were comprised of reoccurring verses and choruses, Roger wrote this program to implement programmed "links" or "phrases" that could be chained together to form an entire song. This was a very useful feature and allowed more music to be played back from less available RAM memory. To elaborate on this method of song composition, software writers borrowed Rolands' idea (used originally on the TR-808 drum 'computer') of saving memory by "calling" a previously recorded sequence instead of having the computer remember all of the notes used in each chorus or verse as it progressed, effectively having the original sequence repeat when that part of the song came around again. In Rogers' program, each of these "links" could contain a number of Midi channels, so entire songs could be broken down into their basic component parts; i.e. Intro, Verse, Chorus, Turnaround, Bridge, Ending, etc. This method allowed more effective use of computer memory and saved redundant passages from having to be re-recorded. To elaborate on this method of song composition, software writers borrowed Rolands' idea (used originally on the TR-808 drum 'computer') of saving memory by "calling" a previously recorded sequence instead of having the computer remember all of the notes used in each chorus or verse as it progressed, effectively having the original sequence repeat when that part of the song came around again. In Rogers' program, each of these "links" could contain a number of Midi channels, so entire songs could be broken down into their basic component parts; i.e. Intro, Verse, Chorus, Turnaround, Bridge, Ending, etc. This method allowed more effective use of computer memory and saved redundant passages from having to be re-recorded. Other companies such as Syntech, Dr.T's, Sonus, and others have produced excellent software for the Apple and Commodore line using the 'smart-looping' techniques. On the other hand, computers with very large memory capacity like the IBM and Macintosh didn't have to worry about economy in the storage of notes and use a 'straight-line' recording method. If a previously recorded section needed to be repeated, the user would "copy" that section and "paste" in in the track at the appropriate time. An example of a very user-friendly program that uses this method is Voyetra Technologies' "Sequencer Plus" program for the IBM. It displays the command options in a below-scr een menu. Using the first letter of a command as the command itself proved to be a very intuitive and non-redundant method of issuing the various instructions. The many variables in this program are all assigned by either the plus and minus keys or with t he greater-than or less-than keys. This program continues to be one of most popular programs for the IBM today, due to its ease of use. b.) Sequencer entry methods Passports' Midi 4, Roger Powells' Texture sequencers and others relied on real-time entry of notes. You either had to have your parts well rehearsed before you began or deliberately slow down the tempo of the computers' metronome in order to play parts in at a more relaxed pace. The other popular type of entry method is "step-time" entry and is more commonly used in hardware sequencers. Step-time recording does offer much more control over the entering of very difficult to play passages, allowing the electronic musician to enter passages that would be impossible for any human to play. Step time entry does not rely on timing to be set by the length of time a note was held down, rather the timing is pre-set and only note position is needed to be entered by the performer. This allows non keyboard players to easily construct sequences of perfect timing that sound very smooth and even when p layed back at normal speed. Each type of entry method has its merits. c.) Notation Software Professional Composer, for the Macintosh is a non-Midi music notation program. It depends on input from the mouse pointing and clicking each note on a grand staff. This program is the most complete for music writing at this time. It is capable is scoring the most complex musical passages, providing all of the general and many exotic music notation symbols, as well as allowing the user to create his own. Full composers' scores can be written in any format and single parts can be extracted in each instrume nts' natural key and range. Text in any Macintosh font may be inserted and even background graphics such as pictures can be inserted. Although the music entered can be played back either from the Macintosh' built-in speaker or external audio out, the qual ity of sound is very limited and restricted to only four notes at time. Rolands' MPS on the other hand is a Midi based program and includes both sequencing and notation capabilities. MPS was met with much resistance due to its method of user interface. MPS is controlled exclusively by the IBM's ten function keys, labeled F1 through F10. This has proven to be a very unfriendly and un-intuitive method of user interface because in one menu a given F key would perform one task, and on the next menu, the same F key would perform an entirely different function. Musicians apparently desire a single letter command for each function that will remain constant throughout the program to perform the various tasks of recording, editing, and playback. This program also faltered in it's notation aspects in that it could only display a s ingle measure of music at a time. Other integrated software for the IBM includes Jim Miller's Personal Composer program. It is the most popular notation software for the IBM and has a fairly good sequencer built-in. After music or computer keyboard entry, the full-page music notation may be viewed and edited. Users may also design their own symbols in addition to the full complement of symbols provided. Although the music will not "scroll" across the screen as it is being played, page up and down commands may be used to follow along wit h the score. We should now distinguish between the three different types of music software we have touched on up to this point. 1.) Sequencing software 2.) Notation software 3.) Integrated software 1.) Sequencing software generally allows the user the most flexibility in the type of input and in the editing of parts of the program. 2.) Notation software is designed to provide automated print-outs of music notation entered from the computer keyboard or mouse. 3.) Integrated programs, such as Jim Millers' Personal Composer and Rolands' MPS integrate portions of each type into one program. Since a great amount of code is required in these programs in order to do both jobs, compromises were made to both the sequencing and notation sections resulting in functional limitations. A way around this problem is to design each program to store their files in the same format so that each can read the others'. A successful example of this concept is used by Mark of the Unicorn. They have split the functions completely apart and use a separate piece of software to handle each job. The sequencer companion to Professional Composer, named Performer, is a sequencer with amazing editing and note management routines, allowing over five hundred tracks containing up 150,000 events of Midi information to be edited and played back to the re solution of a single 128th note. Complete Midi event editing is possible with this program. After composition and editing is complete, the tracks can be re-arranged to the format of a conductors' score and then saved to disk in a form that can subsequently be read by the notation software. This two step method will probably be successfully merged into one program as the price of memory becomes cheaper and processors become faster. d.) Midi interfaces and Syncronization Through necessity, Passport developed the first Midi interface. These first interfaces worked with the Apple // series and Commodore and utilized one Midi in, one Midi out, and a 5-pin sync jack for use with pre-Midi drum machines. This jack provided a 2 4 pulse-per-quarter-note (PPQ) output or would receive same if the software was set to recognize it. Another type of interface was required for Texture, Roland's Apple software, and all IBM software. The interface, known as the MPU-401, is manufactured by Roland for the Apple IIe, Commodore 64 and IBM personal computers. It is termed a "smart" processor because it handles all of the Midi data within itself and frees the computers' processor of these duties in order to increase computer speed and allow more graphics. This interface provides one midi input, two midi outputs and offers tape sync as a standard feature. Syncronization with a rhythm device is important if the music sequenced is to have any electronic percussion score within it. Since only non-Midi drum machines such as the Roland TR-606, TR-808, Oberheim DMX, Emu Drumulator and the LinnDrum existed at th is time, some method of syncronizing their clocks with a Midi sequencer was necessary. An important point to consider here was that a still un-standardized PPQ clock format existed among these manufacturers. Midi sync of 24 PPQ was being implemented on the newer machines, but Sync clock formats of 24,48,96 and higher PPQ formats were used in these drum machines. Reliable methods of syncronizing these machines with the computer constantly baffled pioneers of Midi software and hardware. It bears mention here that now prominent manufacturers such as J.L Cooper and Garfield Electronics began their companies as "black box" interface designers for the custom applications of touring bands attempting to solve such interface problems. An optional port was now being offered by Passport on their interfaces known as "tape sync". By taking the audio output from this jack and recording it onto tape, a sync "tone" was created. This tone, when routed back into the interface could control the sequencers' start-stop functions and maintain syncronization over time. With a multi-track tape recorder, a user could compose and edit tracks on the sequencer, and sequentially transfer them one by one to the recorder in perfect sync. The advantage to t his method was in that an owner of only one synthesizer could produce a tape with the sounds of many synthesizers. This method is used quite frequently in recording studios to drive banks of synthesizers in real time, while saving tape tracks for non-mid i instruments such as vocals and guitars. Although this interface has become the standard Midi interface for the IBM series, very few manufacturers for the smaller computers have adopted that interface, due to it's high cost compared to the Passport interface. e.) Voice Librarian software One of the functions of Midi synthesizers that can easily be taken over by computer is that of the digital storage of their parameter settings, or "patches". By virtue of a portion of the Midi specification known as "System Exclusive messages", each manufacturer is allowed to specify the codes by which each model of their synthesizer can communicate with another of the same brand and model. This was originally intended to allow an owner of two or more of one model synthesizer to operate the controls of on e or more of the the same model remotely, i.e., change control lever "a" and it will change control lever "a" on all of that type connected in the chain, Midi being the networking buss. This is a nice idea, but few musicians own duplicate instruments in their setup. What it has proven useful for however, is in the bulk transfer of parameter settings of a particular model to another of the same model. What the original engineers of the Midi spec didn't expect though, was the use of a computer to emulate the commands of that second instrument in order to direct the first to dump it's parameter setting onto a floppy disk instead of into another synthesizer. With the proper software, a computer owner could effectively bypass the use of a cartridge or tape backup system to store an unlimited number of parameter settings (sounds). This has become a very important and cost effective use of the computer in a Midi setup. Among the first to utilize this feature was Computers and Music, Inc. They researched the codes necessary to request system exclusive dumps from the Yamaha DX-7 and wrote the program now licensed to Passport Designs, Inc. The success of this program has encouraged them to write similar programs for other popular synthesizers. On the horizon are programs designed to contain the codes for all current synthesizers that will write in file formats to be compatible with all popular personal computers. This will solve the problem of owners of different computers attempting to share data from like synthesizers, but using different librarian software. Currently, librarians exist for all personal computers, with only one sharing a common file format, this bei ng SYSEX by Key Clique. the drawback of this program is that is only acts as a 'bulk dump' utility, not allowing individual patches to be transferred between banks. The use of a system exclusive software based librarian has several advantages over the common method of cassette of cartridge based storage methods. First, the transfer of information is instantaneous, avoiding the hassle of level setting to a recorder, which in itself can be a major endevor. Second, (especially evident in a cartridge system) the amount of patches storable on the medium verses cost is substantially reduced with a floppy or hard disk destination verses a limited cartridge destination. Virtually unlimited resources are available on the hard drive when compared to the very limited capacity of a standard RAM cartridge. The only advantage to the cartridge method is in it's portability. This idea is voided if a software based sequencer is to be employed in the same system. Third, the inherent full screen display of all of the voices in a given bank is of great advantage, allowing you to view as much as 64 sounds at a time in their prospective order. By virtue of the computers' memory, several banks can be viewed at a time, allowing a mixing and matching scenario between the various banks of the synthesizer, through which you may create custom banks of selected sounds on a one-by-one basis. Although most modern synthesizers have the ability to send their voice parameter information through Midi, it is still very confusing to the receiving computer if all synthesizers in the system transmit the same command at once and on the same channel. In a large system, these commands will often be issued on a particular channel, accessing a single synthesizer module at a time. f.) Patch Editing software Patch editors are another animal indeed, as these programs are designed to allow the user full access to every parameter of their synthesizer from the computer, using system exclusive messages. This software has made the programming of synthesizers such the Yamaha DX-7 much easier as you can work with a full screen display of the information instead of a the small window provided on the synthesizer. An excellent example of this type of software is Opcode System's DX/TX Editor. A computer patch editor of this type will free the fledgling synthesizer programmer from the tedious chore of single lever digital editing system of todays' synthesizer. To elaborate on that concept, once upon a time, a long time ago (about three years now), synthesizers had a variable lever or knob for every control function on the machine. Due to technological advances and price cutting pressures, the number of actual control devices was cut to one, since this one control could be 'assigned' to any function individually. The user would select function '88', "sustain level", for instance, and by changing the level of that control, the sustain level would vary accordingly. Next, the user would perhaps select function '72', modulation level, and continue to use the same control to change the various functions of the entire synthesizer until the desired sound was realized. While achieving the goal of simplicity in design and manufacture, this method has produced the unpopular side effect known as "user-unfriendliness" and has put a damper on the enthusiasm of many a prospective synth programmer. Voice editors have helped spark the desire of experimentation to synth programmers and have instilled the sense of being "in control" to new users of the otherwise confusing music synthesizer. g.) Sound sampling software This is the newest and possibly most exciting development in music software since Midi was conceived. For the first time, it has become possible to plot and graph an actual sound, study it, change any portion, and to hear the result to confirm the expected result. One of the most difficult of all senses to understand, the acoustic phenomena, can now be broken down into it's most basic parts, analyzed, changed and reconstructed into a predictable whole. The software I am referring to is the Sound Designer series from Digidesign, Inc. It is written to be used with the Apple Macintosh computer in conjunction with digital sound sampling instruments by E-mu, Sequential Circuits and Ensoniq, respectably. In effect, the software does not create the actual sound, it is the means by which the user can examine and modify an already "sampled" or "captured" sound. These instruments make a limited digital recording of an actual sound that is then stored in on-boar d memory. Through the magic of Midi, this digital information can be transferred to the computer for detailed display. Although very complicated to look at in it's raw form, the soundwave can be reduced to a single vibration within thousands. The level to which these programs can display sound data was previous only able to be approximated by other analytical means. This advancement means that studies in the nature of sound and the subtleties that differentiate one sound from another can be concretely plotted, with meaningful results. h.)Sound Modeling The latest development in the field of on-screen sound research is a new program called "SoftSynth", also by Digidesign. This program is designed to be a tool by which a user can develop new sounds from scratch using the additive synthesis method. This me thod of synthesis utilizes a number of sine waves with different frequencies and amplitudes added collectively to form a composite waveform. An existing instrument which uses this method of sound generation is the Hammond organ with drawbars. Each drawb ar represents a different harmonic, and when each of the various harmonics are added together in different degrees many complex waves are possible, some of which resemble other instruments. The SoftSynth program for the Macintosh, however, allows much more complex additions of sine waves, as the user is allowed to specify the center frequency and amplitude envelope of each harmonic, up to 32. Since it is possible to plot any harmonics' amplitude through time, Fourier analysis may be studied in real time and manipulated in order to better understand how sound waves interact to produce sound of a given timbre. VI. Live performance ==================== Live performance utilizing Midi has to be approached carefully. Let us consider what we are attempting to replace by casting a Midi sound module in the place of a musician. When a musician plays, attention is focused to that person. There is action throughout the performance and the audience can generally identify the sounds they hear with the musician creating it. In the case of the Midi band, however, much of that action is missing. Even though the execution and technique may be perfectly programmed, the slight human flaws that are inevitably included as part of the live artists' performance are missing. That's what's wrong if you've tried this approach and have gotten less than a standing ovation. You cannot create a precise performance, have it executed by Midi modules and expect to bring the house down when played. You have created no more than an expensive "juke box" in this solo approach. What can be done however, is to accompany the real performers on stage with selected Midi modules and effects. I cannot overemphasize the possibility of having a well orchestrated performance augmented by one or more Midi instruments as live musicians fill out the rhythm section . This is the application of Midi that was originally intended. As we are continually amazed by the proliferation of Midi controlled devices, we must decide which ones can be used expand our own abilities rather than trying to replace them. VII. Midi effects ================= Since Midi information is used to direct a network of instruments as to which note to play, how long, which sound to switch to, etc., then it seemed feasible to include a Midi jack on effects devices in order to have them automatically switch through thei r functions also. Even though effects are not instruments in themselves, when used with musical instruments and/or voices they can enhance an otherwise dull performance or bring realism to the most lifeless synthesizer sound. Examples of effects that can be effectively Midi'd are digital delays, digital reverbs, mixing and lighting consoles. Through creative use of these "instruments", effects never possible by human adjustment are easily attainable and repeatable. VIII. Education =============== Not only does Midi make the realization of music infinitely easier to produce after its original conception, it also allows beginners to learn music and progress at their own rate without the constant supervision and criticism of a human teacher. Modern , interactive, music software has begun to win the affection of youngsters eager to learn music but are apprehensive of having yet another teacher standing over them. Music will always be difficult to master, but no one says it shouldn't be fun to learn at the same time. With the aid of the computer, very logical and thorough programs of music training can be taught, repeatably, consistently and with every bit as much interaction as could be realized with a human teacher. The Future ========== Many consider the advent of Midi control to be the start of a revolution in the musical community. Midi allows a single performer to easily realize the sound of anything from a small ensemble to an entire orchestra without the expense and human emotion s usually associated with groups of players. The only limiting factor in the midi composers' pursuit of his music is imagination (and his budget). Musicians and the concept of group playing will never become obsolete with Midi, as is often feared. Nothing can match the feelings of spontaneity between performing musicians, nor can machines ever exude the warmth and feeling that a talented player can coax from his instrument. Midi is a tool, a multifaceted one. It must be used to enhance the talent that works with it, not replace it. Through creative use of the many wonderful things that are now possible with this digital standard, music can move on to the next generation of expression, allowing us to experience musical textures that before could only be imagined, and further on to musical frontiers that today could not even be conceived. Gary L. 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