In my dream last night Phil Gelb and I were performing, apparently on an alien planet.
Phil was playing an exotic wind instrument that he doesn't normally play. I was playing what the dream defined as a shakuhachi flute, but it wasn't like anything I've seen in waking life. It had an inward curve and way too many holes. The holes were very small and there was no chance of covering them all with my ten fingers, so it was probably meant for a non-human player.
There were a couple of percussionists with us and a creature made of green slime who was also improvising. This performer didn't make any sound. His/her contribution seemed to be improvised movement. Some small globs of slime got on me as the show went on, and they were really sticky and hard to remove. It was a really fun concert and in the dream, I felt like I played well.