Punch Drunks

• 1934 Three Stooges comedy
• Plot: Moe is a boxing promoter looking for a good fighter. Curly is a mild-mannered waiter who goes crazy whenever he hears "Pop Goes the Weasel." Larry is a violinist recruited to play the tune. Curly becomes a great fighter and gets a championship match. Things look bad when Larry's violin is smashed, but everything turns out fine when Larry delivers the music by driving a truck through the arena wall.
• The plot was recycled somewhat in their 1945 film A Hit with a Miss
• IMDb link