Related Clues:

• ''Toreador Song,'' for one
• Mezzo's moment
• 'Nessun dorma,' e.g.
• Puccini's 'Nessun dorma,' for one
• Song for Domingo
• Evidence of Sills' skills
• "Toreador Song," e.g.
• 'O Isis und Osiris,' e.g.
• Fat lady's solo?
• Diva's performance, sometimes
• Opera-house highlight
• Big moment at the Met
• Diva's big opera number
• 'Che gelida manina,' e.g.
• "Bravo!" elicitor at La Scala