Related Clues:

• Small music group
• Charlie's Angels, e.g
• Overhead expense?
• Wynken, Blynken, and Nod, e.g
• Weather vane place
• Duo + one
• On the house coming up or of late
• The Three Tenors, e.g
• Snap, Crackle and Pop, e.g
• Threesome ... or a hint to this puzzle's theme
• Krypton, e.g
• More than a couple
• The Magi, by census
• Athos, Porthos and Aramis, e.g
• Destiny's Child was one