"The Hillwood RB-1, also, named Rockeyboard, is a remote controller keyboard made in 1977 by the company Hillwood and it's design said to be influenced by Edgar Winter. The instrument is considered to be one of the first Keytar instruments. Its simple design of a piano with a voltage controlled filter allowed the player to make synth type sounds while having it strapped on like a guitar. The front panel offers a set of controls with knobs and a switch lever."
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity: As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.
Aftertouch: Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message.
Poly Aftertouch: sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.