via this auction"This was intended to fit over a traditional piano so when you played it it would activate the synth and you'd sort of be accompanying yourself on synth. It was a fairly dumb idea and they did not sell well. What it is really cool for is making weird synth noises. The bars that would normally fit over the piano keys can be depressed making all sorts of insane sounds. Some of them don't work, some are sticky and some certainly don't make the sounds they were intended to but it's pretty cool. It also has a mic input which makes a pretty cool little guitar amp. Sort of an overdriven 70's rock sound. All the switches on the amp itself work fine and the tremolo is pretty cool. The original volume pedal also works perfectly..."
