Related Clues:
- Some opera headliners
- Met stars
- 45-Down performers
- Beverly Sills and others
- Sills/Sutherland
- Some 16 Across performers
- Met people
- Celebrated singers
- Hard-to-please ones, maybe
- Attitude with singers
- Met standouts
- Agents' handfuls
- Female opera stars
- Temperamental singers
- Spoken up to protect five superstar girl singers?