Related Clues:

• Certain saxophone
• Tra train
• Lowest female voice
• Quartet part
• Choir singer
• Violist's clef, perhaps
• Choral voice
• Soprano's colleague
• Chorus bit
• Bits of a song refrain
• Certain voice range
• Deep-voiced songstress
• Word-forgetter's lyrics
• A choir member
• Second highest in a family of instruments