les claypool played bass on a few later era waits recordings.
there is also a great story from the REAL GONE album, where tom was beatboxing for a track, and les asked him why he didnt just cut it and loop it to make the timing perfect, and tom laughed and said something tot he degree of ‘looping is for people who arent musicians’. haha while i dont think i fully agree, for what he was going for (organic sounds) he is quite right.