Related Clues:

• 38-Down, for example
• Rock music's Police, e.g.
• The Supremes, e.g.
• Jazz combo, often
• Chamber group, maybe
• Musical composition
• Crosby, Stills and Nash, e.g.
• Run-D.M.C., e.g.
• The Magi, e.g.
• Beethoven piano piece
• Tom, Dick and Harry, e.g.
• Beethoven's 'Archduke ___'
• The Bee Gees, e.g.
• See 54-Across
• Group