Related Clues:
- The Dixie Chicks and others
- Some Grammy winners
- Bob and Carol and Ted and Alice
- Pet Shop Boys and Eurythmics, e.g.
- Classical-music movements
- Six-legged bands
- The Dixie Chicks and the Dixie Cups
- The Smothers Brothers and others
- Simon & Garfunkel et al.
- Many comedy teams
- Some acts
- Pairs of pairs
- Sextet halves
- Batman and Robin and Abbott and Costello
- Backup groups, often