Related Clues:

• Four is superior to it
• The last King Richard of England
• ''South Park'' co-creator Parker
• It rarely takes anything
• It takes two?
• Destiny's Child, for example
• Small singing group
• Certain singing ensemble
• XXX ÷ X
• The Stooges, for one
• Trilogy finale
• Not quite a quartet
• Charlie's Angels, e.g.
• The Chipmunks, e.g.
• Two topper