Well?
[4 minutes and 33 seconds of silence]
I thought this board didn’t allow copyright violation, ** Goofus **. Also, does Batman have his 1920’s style “Death Ray” prepared?
Batman, but only if the piano is tuned.
The piano, but only if Batman was hideously mutilated by an overrated American composer beforehand.
We can safely surmise that Cage’s piano is “prepared” in his signature style. The question remains, then, as to whether Batman is prepared for this showdown.
I don’t think it stretches the bounds of credibility to anticipate that Batman arrives equipped with a “Singular Frequency Bat-Harmonic Calibration Instrument” – i.e., a tuning fork.
Given Bruce Wayne’s intelligence, privileged upbringing, familiarity with all things highbrow, and superior education, it would be a safe assumption that he could proceed from there, with a decent (if not necessarily perfect) sense of pitch.
The show would close with Batman picking out the first couple of bars of Nelson Riddle’s “Batman” theme on the newly-tuned piano.

I’d rather see Batman vs. John Tesh’s piano.