Bum

From the "Marty's First Date" episode (02/02/1994) of animated TV series The Critic. Desperate to reach his gal, who's flying away, young Marty dumps her cello out of its case and hides inside to get aboard her plane. A random bum retrieves the cello from the airport trash can and plays it beautifully. A little later a poster shows him performing a sold out show at New York City's Carnegie Hall, billed simply as "Bum."