Birthday Surprise

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Across
  1. 4. : Handout with cast list (9)
  2. 5. : “All women,” in Italian (5)
  3. 6. : Admit slips to the show (7)
  4. 11. : Four-letter “air” (4)
  5. 12. : Notorious notes from Tonio’s aria (6)
  6. 13. : “Thus,” in Italian (4)
  7. 16. : Composer of Così fan tutte (6)
  8. 19. : Drama told in music (5)
  9. 20. : City of fashion and opera (5)
  10. 22. : Place for performance (5)
  11. 23. : Military unit in Donizetti’s comedy (8)
  12. 24. : Cry for more (6)
  13. 25. : Celebration today (8)
  14. 26. : What this puzzle celebrates (4)
  15. 27. : Cathedral near couture (5)
Down
  1. 1. : Composer of La fille du régiment (9)
  2. 2. : Musical opener before curtain rises (8)
  3. 3. : Hidden mission, like this puzzle (5)
  4. 7. : “Cheers!” in Italian (6)
  5. 8. : Sharp outfit for opening night (4)
  6. 9. : Legendary Milan theatre (2,5)
  7. 10. : Gesture of affection (4)
  8. 14. : Hero who sings nine high C’s (5)
  9. 15. : Shout of praise (5)
  10. 17. : Ends every week (7)
  11. 18. : Guide to your seat (5)
  12. 21. : Mozart’s homeland (7)
  13. 25. : Tier of theatre seating (7)