Related Clues:
- 'Than these fish none go deeper, by the sound of them (6)'
- Met villains, perhaps
- The lowest of the low
- String section members
- Several 'Boris Godunov' parts
- Choral contingent
- They have very low ranges
- Deep voices
- Deep, low voices
- "Boris Godunov" singers
- Some opera performers
- Parts of many quartets
- Singers in opera perch on one
- Group of unmissable, up-and-coming singers
- Instrument of false spy alert