I like this:
Yeah, I went to [Coltrane's] house and the first thing he did—he had one of those upright wall pianos—he opened the lid and then he did like this, made a tone cluster, “GRRRRUNGGGH,” kept the foot on the sustain, “GRRRRUNGGHH,” and we had our horns out, and he asked me, he said, as the tone was still going, he said, “See how much of this you can catch. Let’s see how much you can catch.” And I heard the “GRRRRUNGHH” so I wasn’t messing around, trying to loop center tones and not so centered and all that stuff, and he asked me to do the same thing to him and I did “WRRRRRUNGH,” and he got his horn and he was all over the place, [mimes rapid playing] really soft because of neighbors and all that. He had a towel in the bell. [mimes rapid playing again] Then we’d do it back and forth on the piece that holds the music, the lyre or whatever, there’s a harp book there and I was checking the book out and it had the [rapid playing sound] and I said to myself, “Sheets of sound.” [laughs]