A Hydreigon playing the piano underwater. If that ain't creativity I don't know what is.
Futile attempt. You can't play piano underwater-there would be no sound. Even the vibration will be dampened and erased by the water. While it's still on debate whatever Hydreigon head-arms has functional ears that can hear, or if it can 'hear' the vibration of the strings using bone conduction from the jaw, pianos are simply not made to be played underwater.