That change happened about 1991. It was not possible to transfer the Expanded Instrument System to the computer until then, when 16-bit recording became available.

There is a book called San Francisco Tape Music Centre:1960s Counterculture and the Avant-Garde and this book describes everything that you want to know or don't want to know about it, with a lot of documentation.

I got very interested in attention and awareness and how to achieve certain states through understanding this.

[Improvisation ] is been with me all my life. We all do it.

Those people who don't have any voluntary control, or hands, can work with the physical movement that they can do - whatever voluntary movement they have, even the slightest .

My writing has always been a rather non-linear process. I've found if I get something down, I can listen to it and other things start to come.

The San Francisco Tape Music Centre was a kind of collective non-profit that my friends and I got started so that we could pool our equipment and make tape music.