Baton Bunny is a 1959 Warner Bros. Looney Tunes cartoon, directed by Chuck Jones and Abe Levitow.
Bugs is about to conduct "The Warner Bros. Symphony Orchestra" (supposedly in concert at the Hollywood Bowl).
In the middle of the performance, as a result of the music at that moment, Bugs plays dual roles as an indigenous person and the American troops chasing him.
Bugs loses his sanity and attempts to kill the fly, crashing through the orchestra and into the instruments as he does so.
Bugs looks around and sees that the seats are empty, then he becomes aware of faint clapping – coming from the fly.