geography: Which U.S. city is known as Beantown?

Questions

Aerosmith: When Joe Perry briefly left the group. who was his replacement?

Aerosmith: Who sings background vocals on Aerosmith's song "Amazing"?

Aerosmith's song about lust in a place you find in a department store?

Aimee Mann's hit single off "Whatever"?

Air Supply song: "I'm lying alone with my head on the phone"?