Related Clues:

• 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 Stooges, for instance
• Subordinate division of a minuet
• CEG in C Major
• Troika
• Chamber group
• Musical chord
• Chamber piece
• Combo size, sometimes