Related Clues:

• Chamber group, maybe
• Musical composition
• The Seven Dwarfs, e.g.
• Wedding band, maybe
• Beethoven's Opus 20, e.g.
• Musical work
• The seas, e.g.
• Snow White's Dwarfs, e.g.
• Deadly sins, e.g.
• Two trios and a soloist?
• The dwarfs, e.g.
• Singing group
• Beethoven work in E flat
• The Pleiades, e.g.
• Many a swing band