Pat Metheny - Roland G-303 Guitar Synthesizer Controller
According to Metheny: "The GR-300 was the first and, for a long time, only guitar synth that had a musical quality to it. Every little nuance and detail of what you did came out through the instrument, in terms of touch, attack, dynamics, etc. and this was because it had nothing to do with MIDI."
Late 1970's Roland G-303 Guitar Synthesizer Controller - Brown