A look at Yamaha's CS-30 monophonic synthesizer from 1977. This was the closest Yamaha got to a modular synth before their attention moved wholesale into FM synthesis. Yamaha released their first analogue synth (the SY-1) in 1974 and their last (the CS-01 II) in 1983. They've never made an analogue synthesizer since, although they have made analogue modelling synths.