Being early, and the risk that comes with it.
The Buchla Electronic Musical Instruments (1965) were modular, voltage-controlled systems designed for creating novel sounds—not imitating existing ones—using touch/pressure interfaces instead of keyboards, with synthesis based on FM, AM, and dynamic waveshaping.
The Serge synthesizer is an analogue modular system developed at CalArts in late 1972. It was built to be inexpensive and powerful, a democratic alternative to Buchla systems. It shipped as DIY kits assembled unofficially on a CalArts balcony. Modules expose circuit aspects on the front panel for unconventional patching. All signals use banana jacks—no separation between audio and control voltage. Stackable banana plugs reduce the need for mults. One unit was used on the 1975 Greenpeace anti-whaling expedition to approximate and broadcast whale sounds.
The EMS Synthi 100 is a large analogue/digital hybrid synthesizer commissioned by Radio Belgrade, designed by David Cockerell and documented in 1971. It developed from a concept of three VCS3 systems but contains analogue modules equivalent to six VCS3s. It features 12 voltage-controlled oscillators and eight voltage-controlled filters. Two monophonic keyboards produce four control voltages and two triggers. Its digital sequencer has three duophonic layers and 256 duophonic note events. Two 60×60 matrices connect modules via patch pins. Keyboard spread adjusts for equal temperament or microtonal tunings up to 61 divisions per semitone.
The EMS Synthi AKS is a portable modular analog synthesiser introduced in March 1972. It features a built-in keyboard and sequencer, a patch pin matrix, and shares design DNA with the VCS 3. Its sequencer creates eight-note repeating patterns. Users have described it as a 'noise machine'. One full album—Music from the SYNTHI—was made using only this instrument.
The EMS VCS 3 is a portable analogue synthesizer introduced in 1969 by Electronic Music Studios. Designed largely by David Cockerell and styled by Tristram Cary, it uses a pin-based patchboard matrix instead of cables. It lacks a built-in keyboard, making it better suited for sound effects generation and external signal processing than melodic playing. Its tuning instability stems from exponential voltage-to-frequency conversion. It was one of the first portable commercially available synthesizers, housed entirely in a small wooden case.