Related Clues:

• Helium, for one
• The Stooges, for one
• Not quite a quartet
• Charlie's Angels, e.g.
• The Chipmunks, e.g.
• Mother Goose's mice, e.g.
• Old King Cole's fiddlers, e.g.
• Dixie Chicks, e.g.
• Small jazz group, e.g.
• Singer plus two, e.g.
• Quartet with one out sick
• Quartet, after a defection
• You may hit it when you're angry
• Parking spot for Santa
• Top of the mouth