Related Clues:
- Otello, Don José and Siegfried
- Candide portrayers
- Singers otherwise found in numbers
- Opera heroes, often
- They start and end on low notes
- Certain a cappella group members
- Male voices higher than basses
- Singers such as Ian Bostridge and Russell Watson
- Mercury and Mars, for two
- Singers sounded out notes
- General senses
- Singers: one more than nine, otherwise singular
- Barbershop fixtures
- Opera singers such as Caruso and Bocelli
- Voices above basses