Dave Smith, Whose Synthesizers Shaped Electronic Music, Dies at 72

His innovations included the first polyphonic, programmable synthesizer and the universal connectivity of MIDI.

...Mr. Smith introduced the first polyphonic and programmable synthesizer, the Sequential Circuits Prophet-5, in 1978. It was used on 1980s hits by Michael Jackson, the Cars, Madonna, Peter Gabriel, Talking Heads, a-ha, Duran Duran, Genesis, the Cure and Daryl Hall & John Oates. Over the next decades, instruments designed by Mr. Smith were embraced by Radiohead, Arcade Fire, Dr. Dre, Flying Lotus, Nine Inch Nails and James Blake, among many others.

In the early 1980s, Mr. Smith collaborated with Ikutaro Kakehashi, the founder of the Roland instrument company, to create MIDI (Musical Instrument Digital Interface), a shared specification that allows computers and instruments from diverse manufacturers to connect and communicate, making for countless sonic possibilities...