Related Clues:

• Stooges, e.g.
• Donald's nephews, e.g.
• The Ghostbusters, e.g.
• Alvin and the Chipmunks, e.g.
• Classical composition
• The Jonas Brothers, e.g.
• Duet + one
• Wilson Phillips, for one
• Small music ensemble
• The Brady boys or girls
• A combo
• The Three Tenors, e.g.
• Quartet after a defection
• Green Day or Cream, e.g.
• Classical opus