Related Clues:

• Lengthy choral work
• La Scala solo
• Choral work
• La Scala show-stopper
• Callas' specialty
• 15-Down specialty
• Mozart composition
• Met number
• High point at the Met
• 'Turan-dot tune'
• Diva's lines
• Song for "Aida"
• Opera offering
• Air in an opera
• Leontyne Price piece