Related Clues:

• High-culture strains
• What the ''fat lady'' sings
• Song that's often in a foreign language
• Beethoven's 'Fidelio,' e.g.
• P.D.Q. Bach's "The Stoned Guest," e.g.
• Diva's tune
• 'William Tell' component
• Battle number
• Work with choruses
• Rossini genre
• 'O terra, addio,' e.g.
• "Pagliacci" piece
• Soprano solo, sometimes
• ''Habanera,'' for one
• Soprano's song, sometimes