Conversation so far:
Who were the other members of the Belmonts?
The other members of the Belmonts were Carlo Mastrangelo, Fred Milano, and Angelo D'Aleo
Did the members of the Belmonts know each other from school?
The other members of the Belmonts were from the same neighborhood as Dion DiMucci

Question: How old were the members of the group?
Self-contained rewrite: How old were the members of the group the Belmonts?