Related Clues:

• Two quartets?
• Saint-Saëns wrote one for piano, trumpet and strings
• The Mighty Mighty Bosstones, for one
• Four pairs united
• Assemblage of eight
• One's pawns, e.g.
• Group of eight musicians
• Band of eight
• Baseball starters less one
• Four-couple combo
• Square dance unit
• Two quartets, combined
• The Pleiades, for one
• Eight-piece band
• Ennead minus one