Related Clues:

• ___ sax
• Saxophone range
• Pinkerton, in 'Madama Butterfly,' e.g.
• Bocelli, for one
• Four-part harmony part
• -- profundo
• Opera singer
• General course
• Barbershop need
• Caruso, for one
• Top man in the choir?
• Low singer
• Pavarotti or Domingo, e.g.
• Carreras, for one
• Opera villain, often