Related Clues:
- Repetitive musical piece
- Three
- Rock's Green Day, e.g.
- Kingston --
- The witches in 'Macbeth,' e.g.
- Wooden shoe sailors, e.g.
- Andrews Sisters, e.g.
- Rock's Green Day, for one
- Small musical ensemble
- Sonata movement finale
- 'Pop, culture, TV' network
- Quartet with a defection
- ''The Three Tenors,'' for example
- Chamber-music group
- Lounge group, perhaps