So we went to see this performance art piece last weekend. It consisted of a quartet of cellos, except the cellos were made out of the preserved skins of four dead women. (They were fairly famous, having already acted after death, and their bodies were currently engaged in another show.) They were hollow and dried out, with the strings going from their toes to their forehead, and their noses acting as the bridge. I think you could tune them by twisting the toes. It was supposed to "explore the boundaries between music, sexuality, and death by exposing the false dichotomy that we introduce to such". It sounded like crap, though. I have to say that wood makes for much better instruments.