Batman: The Dead Ringers

As a piano player feeds musical notes to the music roll machine via a microphone, the caped crusader mentally visualises the chords, which will make the cutting devices to puncture the outlines of their bodies. The dynamic duo save themselves by out-shouting the piano with bad Bat-singing. Batman and Robin quickly apprehend Harry and his pack of piano movers and take them to the police HQ, where they reveal that a master criminal named Fingers is the ringleader.