Backstage at the opera house, chorister Ricardo Baroni (Allan Jones) hires his best friend Fiorello (Chico) to be his manager. Ricardo is in love with the soprano, Rosa Castaldi (Kitty Carlisle), who is also being courted by Lassparri. Driftwood arrives and finds Lassparri attacking Tomasso, his dresser (Harpo), who knocks Lassparri unconscious by hitting him over the head with a mallet. Fiorello appears and identifies himself as the manager of the "greatest tenor in the world". Driftwood, mistakenly thinking Fiorello is referring to Lassparri, signs Ricardo to a contract.