Someone pinged this over to me. I mean, there's an infinite amount of this stuff online, but it merits inclusion because I reviewed an excellent Charles Cohen CD way back when. My favorite Buchla creations are these - crazy magic wands that you wave around to control your Synth! Bit more interesting than a Keyboard innit!
Charles is an absolute master of the Buchla, but I bet what is springing into everyone's minds is (yes) Morton Subotnik. Touch, Sidewinder, The Wild Bull, Silver Apples. See what I mean about separating out musician from instrument? I went to see Subotnik talk at the Lux Cinema five or so years ago. He had a pretty close relationship with Buchla, commissioning him to build his first Modular Synth in 1960. At the talk Morton was enthusing about his idea of being able to sit like an artist in front of a canvas and "paint" in sound. I wonder if the "Music Easel" (1972) had some connection with this?
And what about the bit at 3:25? Surely Q Bass must have sampled a Buchla on his Boogie Times Tribe "The Dark Stranger" remix?