The frog and the nightingale

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Across
  1. 3. Sang
  2. 6. Fairly deep
  3. 7. A very loud
  4. 8. Shaking
  5. 11. Pleased
  6. 12. Sang beautifully
  7. 16. A small duck
  8. 17. Sang quickly
  9. 19. A large water bird
Down
  1. 1. Miserable
  2. 2. Unclear
  3. 4. Delight
  4. 5. show
  5. 9. Totally interested
  6. 10. Quiet
  7. 13. Joy
  8. 14. Evening
  9. 15. Morning
  10. 18. Muddy
  11. 19. Hated