Related Clues:

• Sextet X .5
• "Jeopardy!" contestants, collectively
• Jazz group, often
• The Fleetwoods, for example
• Singing group
• ZZ Top, musically
• Lounge group, sometimes
• Duo plus one
• Destiny's Child, for example
• Small singing group
• Certain singing ensemble
• The Stooges, for one
• Not quite a quartet
• Charlie's Angels, e.g.
• The Chipmunks, e.g.