I wrote a piece, "Watershed IV", for percussionist Steven Schick, which involved the very fundamental conceit that he was centered within an instrumental array. The idea was that the audience would be put in there with him, metaphorically. There would be speakers surrounding the audience that would reproduce, at some level, for the listener, the experience that Steve was having within his array of instruments. Steve and I worked almost a year on the setup for that piece, playing with different spiral arrangements and numbers of instruments and different geometries.