Related Clues:

• Start of a musical refrain
• Some aria singers
• Opera singer
• Singing group
• General course
• Barbershop need
• Choir group
• Caruso, for one
• Some chorus girls?
• Top man in the choir?
• Pavarotti or Domingo, e.g.
• Carreras, for one
• Verdi's Otello, for one
• Voice between alto and baritone
• 114-Across, e.g.