Nanette: What's wrong with following your heart? Just because we left him doesn't mean the perfect woman isn't out there somewhere.
Lilith: That's the problem. Frasier thinks every woman is the perfect woman until he finds the deal-breaking flaw. [distracted by Diane's singing] You-, we... [to Frasier] Can you make that stop?
Frasier: I'm sorry. It's stuck in my head.
Diane: [singing] "I realized that I was unable to sing..."