Related Clues:

• Kathleen Battle's bag
• Butterfly locale?
• Covent Garden event
• Musical show
• Beethoven wrote one
• "Faust," for one
• Rossini work
• Gig for Domingo
• Phantom's locale
• Flagstad's field
• Juilliard major
• Lehár work
• Price performance
• "The Magic Flute," e.g.
• "Die Walküre," e.g.