Related Clues:

• Two of a kind
• Rock's Cream, for instance
• Duet plus one
• Larry, Curly and Moe, for example
• Rock's Cream, e.g.
• Wynken, BIynken and Nod, e.g.
• The Andrews Sisters, e.g.
• Backup singers, often
• Blink-182, e.g.
• The Everly Brothers, e.g.
• The Stooges, for instance
• Subordinate division of a minuet
• Troika
• Chamber group
• Abbott and Costello, e.g.