Related Clues:

• Pinkerton in 'Madama Butterfly'
• Some saxes
• Start of a refrain
• Member of the choir
• What to sing while skipping
• Singing sounds
• Sax range
• Gigli, e.g.
• Some singers
• Refrain snippet
• Common refrain
• Tone
• Opera hero, often
• Vibe
• Pavarotti, notably