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Great site for keyboard and toy music mods - "Circuit- bending is the art of hacking, modifying and abusing the hardware of cheap electronic sound toys or such keyboards ("tablehooters") in totally different ways than their manufacturer has intended - namely as experimental musical (or not so musical) instruments. This can result in such odd things like converting a battery operated baby toy duck into a tekkno synthesizer, though circuit- bending can be basically regarded as a cyberage's anarchic successor of phono record scratching. Much like record scratching only got possible by systematically ignoring all grannies warning: "Don't touch the precious gramophone discs with your smeary, sweaty fingers!", the same way circuit- bending lives from systematically ignoring any "warranty void" warning stickers on its explorative mission to boldly hear what no man has heard before..." - Link.