Related Clues:
- Singers from US behind AC/DC covers
- Low-voiced choir members
- Surface-rattling voices
- Low choristers
- Barbershop voices
- Deep opera singers
- Doo-wop group members
- Voices below tenori
- A Nazi group interrupts sexually ambivalent singers
- Soprani opposites
- Ones playing things low-key?
- They go low when others go high
- Met villains, often
- They sing, or swim
- Opera's Don Pedro and Don Pasquale, e.g