Music crossword

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Across
  1. 1. successful boy band
  2. 7. two beats
  3. 8. Jason derulos new song
  4. 9. the other clef
  5. 10. the most common clef
  6. 13. Aussie composer
  7. 14. a tall stringed instrument that's very light and dreamy
  8. 15. music test
  9. 17. it's got strings
  10. 18. a singing instrument
Down
  1. 2. drumsticks
  2. 3. one beat
  3. 4. empty circle
  4. 5. old rock band with upcoming movie
  5. 6. half a beat
  6. 11. my favourite music teacher
  7. 12. a character from the junior production
  8. 16. it's got keys