Birthday party theme

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Across
  1. 4. The best instrument (and no it's not recorder)
  2. 6. Blok song (without spaces)
  3. 8. heroic, brave
  4. 10. Oldest university
  5. 11. Best harry potter character
  6. 13. Big sea animal
  7. 14. Adult male voice
Down
  1. 1. The Mozart cadenza I'm playing
  2. 2. Best teacher in the hague
  3. 3. Ayla's son
  4. 5. Best dessert (or meal)
  5. 7. Gloria's favorite course at university
  6. 9. Favorite composer (or at least it was once)
  7. 11. Most annoying thing ever
  8. 12. Senegal's capitral