ARP Pro Soloist

The ARP Pro Soloist was most notable used by Tony Banks of Genesis, on Selling England By The Pound (1973) and on other Genesis recordings.  It's a preset, one-oscillator monophonic synthesizer with 30 preset sounds and (get this) an early incarnation of aftertouch!  What's great about the Pro Soloist is you can assign different modulations to the aftertouch, plus vary the sensitivity.  Our keyboard had a doubling mod added to it, which I have no idea how to explain it or what exactly it's doing, but it basically sounds like it's doubling the oscillator and de-tuning it so it sounds like a two-oscillator synthesizer.