Related Clues:

• The Fleetwoods, for example
• Singing group
• ZZ Top, musically
• Brahms piece
• Lounge group, sometimes
• Bach creation
• Duo plus one
• Beethoven work
• Destiny's Child, for example
• Moonlight for Beethoven
• Small singing group
• Certain singing ensemble
• The Stooges, for one
• Not quite a quartet
• Charlie's Angels, e.g.