Police Academy S01 E06 A Blue Knight at the Opera

When the opera is plagued by numerous accidents, the team is called to protect opera singer Mademoiselle Diva. Mahoney's advances are rejected, as Diva is enamored with Tackleberry instead. During a performance attended by the Police Chief, Diva is kidnapped by the Phantom of the Opera. Lassard and House try to cover, making their stage debuts in the process.