Answer: baritones

AnswerCrossword Clue
BARITONES

London and Singher.

BARITONES

London, Singher, Warren.

BARITONES

Singers.

BARITONES
Merrill and Milnes
BARITONES
Merrill and Milnes, e.g.
BARITONESOpera cast members
BARITONESFigaro and others
BARITONESRossini's William Tell and others
BARITONESSome choristers
BARITONESMale opera roles
BARITONESCrooners, often
BARITONESMariano Stabile et al.
BARITONESSome deep voices