Related Clues:

• Without company
• Opera showstopper
• What the fat lady sings
• ''Un bel di,'' for one
• ''Toreador Song,'' e.g.
• Berg's 'Der Wein,' e.g.
• Part of a libretto
• An air from ''Aida''
• Student pilot's quest
• Pons song
• Operatic song
• Opera highlight
• ''Celeste Aida,'' e.g.
• Lindbergh flight, e.g.
• Callas selection