February 1, 1983: at the Winter NAMM show in Los Angeles, Dave Smith of Sequential Circuits connects a Prophet 600 and a Roland Jupiter-6 with a 5-pin DIN cable. The Prophet 600 plays a melody, the Jupiter-6 repeats it - for the first time in history, two synthesizers from different manufacturers communicate in the same language. That language is MIDI, the Musical Instrument Digital Interface, a standard that in four years will transform studio production: synchronization, sequencers, multi-timbral rack synthesizers. MIDI in 80s music is the transition from manual programming to automation, from a studio with five keyboardists to a studio with one sequencer.
Before MIDI: every manufacturer spoke its own language
Before 1983, electronic instruments from different manufacturers could not communicate. Roland used DIN sync (24 or 48 pulses per quarter note), Oberheim used the Parallel Buss, Sequential Circuits had its own interface, Yamaha had another. A producer who bought a Roland Jupiter-8 and a Sequential Prophet-5 could not connect them with a single cable: converters were needed, manual synchronization, and often just recording parts separately to multitrack.
Ikutaro Kakehashi, president of Roland, felt the lack of a standard was holding the industry back. In June 1981, he proposed to Tom Oberheim of Oberheim Electronics that they develop a universal interface. Oberheim offered his system - the Parallel Buss - but Kakehashi found it too cumbersome. He turned to Dave Smith of Sequential Circuits, who with engineer Chet Wood developed a universal interface based on Roland's DCB. In October 1981, Smith presented the paper “Universal Synthesizer Interface” at the Audio Engineering Society show.
1983: the birth of MIDI
The name was proposed by Smith: Musical Instrument Digital Interface. Kakehashi wanted Universal Musical Interface (UMI, “you-me”), but Smith found it “a little corny”. Robert Moog announced MIDI in the October 1982 issue of Keyboard magazine. The MIDI 1.0 specification was published in August 1983.
The first MIDI instruments appeared that same year: the Roland Jupiter-6 and the Sequential Prophet 600. The first MIDI drum machine - Roland TR-909 (1983). The first MIDI sequencer - the Roland MSQ-700 (1983). The MIDI Manufacturers Association (MMA) was formed at the 1984 Summer NAMM show in Chicago. The MIDI 1.0 Detailed Specification was published at the 1985 Summer NAMM.
Detail: MIDI transmits data at 31,250 baud over a 5-pin DIN cable. One cable carries up to 16 channels - each can control a separate instrument. Cable length: up to 15 meters. MIDI transmits not sound but commands: a note, its pitch, velocity (strike force), duration, controllers (modulation, pedal, pitch bend).
What MIDI changed in the studio
MIDI in 80s music produced three revolutions simultaneously:
- Synchronization: a single MIDI clock synchronized the drum machine, sequencer, and synthesizer. Previously this required DIN sync or manual tempo matching. Now the TR-909, the MSQ-700 sequencer, and the Jupiter-6 all ran from one tempo source.
- Sequencers: a MIDI sequencer recorded and played back parts without a tape machine. The Roland MSQ-700 (1983) was the first hardware MIDI sequencer. By 1985, software sequencers appeared on computers: the Atari ST (1985) shipped with built-in MIDI ports - the only home computer with this feature.
- Multi-timbrality: one keyboard could control rack modules across 16 MIDI channels. The Roland MKS-80 (1984) and Yamaha TX816 (1985) were rack synthesizers controlled via MIDI. A studio of five keyboard stands was replaced by one MIDI keyboard and a rack. This made studio production cheaper and made the home studio a reality: by 1987, a producer with an Atari ST, two rack synths, and a MIDI keyboard could record a professional-quality track in a bedroom.
The synthesizers that built Italo Disco were programmed manually before 1983: bass line on a sequencer, melody on another synth, rhythm on a drum machine - all separate. MIDI allowed synchronizing them and recording parts into a sequencer for later editing.
Atari ST and the computer revolution
The Atari ST (1985) was the first mass-market computer with built-in MIDI ports. Programs like Steinberg Cubase (first version 1989, under the name Steinberg Pro 24) and C-Lab Notator (later Emagic Logic) turned the Atari ST into a studio sequencer. By the late 80s, an Atari ST + a MIDI keyboard + rack synths was the standard studio of a European producer.
The Roland MPU-401 (1984) was the first MIDI sound card for the IBM PC. Roland sold sound chips to other card manufacturers, establishing a universal MIDI-to-PC interface. By 1987, MIDI was supported on the Apple II, Macintosh, Commodore 64, Amiga, Acorn Archimedes, and IBM PC. The Yamaha CX5M (1984) was the first computer (an MSX system) with built-in MIDI support and a sequencer.
MIDI and Italo Disco: practical impact
For Italo Disco producers, MIDI arrived at a transitional moment. The classic hits of 1983-1985 (Savage, Ryan Paris, Den Harrow) were recorded without MIDI: separate synthesizers, manual synchronization, scores on paper. By 1986-1987, MIDI was already standard: producers used sequencers for bass lines and arpeggios, drum machines were synchronized via MIDI clock.
The Yamaha DX7 (1983) was the first mass-market synthesizer with MIDI. The Roland Jupiter-6 (1983) was the first Roland with MIDI. By 1985, MIDI was standard for new instruments: Korg, Yamaha, Casio, Ensoniq - all included MIDI in their base configuration. Instruments without MIDI - the Jupiter-8, Prophet-5, OB-Xa - were retrofitted with third-party MIDI kits. For example, a Jupiter-8 MIDI kit cost about $500 and allowed receiving MIDI commands for playback. This extended the life of analog machines that would otherwise have become obsolete by 1986.
MIDI also changed live performance. Before MIDI, performing electronic music meant either playing to a backing track or manually playing multiple keyboards. With MIDI, one keyboardist could control a sequencer that played bass, arpeggios, and rhythm while the musician played lead parts. Depeche Mode, New Order, Pet Shop Boys - all switched to MIDI setups for tours in the second half of the 80s.
MIDI clock and drum machines
MIDI clock is a synchronization signal that transmits tempo from one device to another. Before MIDI, drum machines were synchronized via DIN sync (Roland) or separate cables. MIDI clock allowed chaining drum machines, sequencers, and synthesizers: a master device sets the tempo, all others follow. MIDI Time Code (MTC), added later, allowed synchronizing MIDI with SMPTE time code - essential for film and television post-production.
The TR-909 (1983) was the first drum machine with MIDI. Before it, the TR-808 used DIN sync. With MIDI, a producer could trigger the 909 from a sequencer, synchronize it with a TB-303 bass sequencer, and record everything to a computer. This setup - 909 + 303 + sequencer - was the foundation of acid house and techno in 1987-1989. Without MIDI, this setup would have been impossible: the 808 and 303 without MIDI required separate DIN sync, and without a sequencer, parts had to be played manually.
General MIDI and sound standardization
General MIDI (GM), standardized in 1991, defined 128 standard sounds and 16 channels. This meant a MIDI file recorded on one machine would sound the same on any other GM-compatible device. Before GM, the same MIDI file could sound different on different synthesizers - a “piano” note on Yamaha could be “synth piano” on Roland.
GM was a response to a problem MIDI created: the standard transmitted commands but not timbres. A Standard MIDI File (SMF) stores not sound but instructions - notes, controllers, tempo. A file a thousand times smaller than an audio recording, but it sounds exactly like the timbres of the instrument playing it back. This compactness made MIDI files popular for sharing music online in the 90s - before broadband internet. Fan-made MIDI arrangements were a way to share music when a megabyte file meant a lot.
The problem with GM: early sound cards - AdLib, Sound Blaster - reproduced MIDI through low-quality FM synthesis and cheap DACs. This created the impression that MIDI “sounds bad,” even though MIDI itself contains no sound. Playback quality depends on the sound source, not the protocol. This misconception persisted for years and still occurs among people familiar with MIDI only through 90s game soundtracks.
Legacy: MIDI today
In 2013, Dave Smith and Ikutaro Kakehashi received Technical Grammy Awards for creating MIDI. At the 2020 Winter NAMM, MIDI 2.0 was introduced - bidirectional communication, higher data resolution. But MIDI 1.0, published in August 1983, still works: a 5-pin DIN cable, 31,250 baud, 16 channels. The cable Smith stretched between a Prophet 600 and a Jupiter-6 at NAMM 1983 is compatible with a synthesizer released in 2024.
The Guardian wrote in 2022 that MIDI remains to music what USB is to computing: a standard representing a value system of cooperation and mutual benefit, one all but thrown out by today's major tech companies in favour of captive markets. Dave Smith gave MIDI away for free: “We had to give it away, otherwise it wouldn't have worked.” If every manufacturer had adopted its own standard, MIDI would not exist. That everyone adopted one standard is MIDI's main victory. Forty years later, MIDI 1.0 still works today, and no competing standard has been able to replace it.