Related Clues:

• Its players bow
• Voice below baritone
• Bigmouth, for one
• Clef below middle C
• He hits low pitches
• Barbershop necessity?
• Source of low pitches?
• Wide-mouthed fish
• Barry White, notably
• Certain stringed instrument
• It's deep
• Deep end?
• Low-voiced
• Orchestra string
• Low part