Related Clues:

• Deep-voiced singer
• Follower of the bottom line?
• River fish
• Musical astronaut Lance
• Low notes
• Paul McCartney played it for the Beatles
• Doctor Bartolo, in "The Barber of Seville"
• __ profundo: very low voice
• Lowest part
• Grouper, e.g.
• Voice below baritone
• Bigmouth, for one
• Clef below middle C
• He hits low pitches
• He's deep