This is a work in progress…
This version adds the balloon drums and a very wet spring modified by a slow glissando, up or down or both. The drums are samples from a 4′ long 4″ sewer pipe with a balloon membrane. I take the sample up a few octaves, add five or six hits for every note at different octaves, separate the hits by a few milliseconds, and change the amplitude in different ways. The balloon drum is the only tuned instrument in the piece so far. I had to dump the oboe.