He was one of the most notable pioneers of electronic music, creating the first voltage-controlled subtractive synthesizer to utilize a keyboard as a controller. Rick Wakeman (Yes), Keith Emerson (Emerson, Lake and Palmer), Geddy Lee (Rush), Wendy Carlos, etc all are musicians who used Bob's tools to create music.
Was disappointed that Moog no longer produces this. The reason given was that with 3000 parts it was too complicated to manufacture and support. Robert Vo (who is also located in Asheville) has since created a new device that can be placed on an acoustic guitar to synthesize its sound