Music Puzzle :) If all correct extra prize of your choice

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Across
  1. 2. when you play softly
  2. 4. separated note from the rest of the notes, when your hand jumps high also known as stacatto
  3. 5. played with your foot
  4. 6. the set of lines where the notes go
  5. 11. three connected eight notes
  6. 13. half a step down, black key
  7. 14. when you play loud
  8. 17. seen at the beginning of each page of music (4/4)
  9. 18. half a beat or half of a quarter note
  10. 19. what you hit to play piano
Down
  1. 1. hold for one beat
  2. 3. Most often seen when playing the left hand
  3. 7. the break between notes on the music
  4. 8. hold for four beats
  5. 9. the note often shared by both thumbs
  6. 10. hold for two beats
  7. 12. Most often seen when playing the right hand.
  8. 15. the distance of eight between one note and another, middle c to high c
  9. 16. half a step up, black key