I made this portrait years ago in his studio in coastal Maine. He had a log cabin kit assembled without any walls for his studio. He was super polite and asked if he could just continue working while I set up. Of course, I agreed, and he smoked cigarettes and made music. His studio had over a dozen keyboards and synthesizers arranged around his computer, he would play something on a keyboard, import it, mix it into the piece he was working on, then rearrange, play it backwards, play something on another keyboard, rearrange it, play it back and move on. It was with a frenetic, constant pace that he worked, and had no trouble being interrupted while I needed him to sit for a portrait. I spent about three hours working and making portraits with him.
It's amazing what art can do to people.