hmmm, I make whale noise, which sound very cool... but i use a microphone (more importantly the feed back from it) and a metal bin and loads of reverb.... not very complicated i know, but some great sounds... hehehe... oh yeah, you have to turn the treble right down or you get and ear piercing whistle... it can make some other non whale like noises, like you get a very fast tapping sound that's strangly melodic...