Music puzzle

123456789101112131415161718
Across
  1. 3. a note worth 1/2 count
  2. 6. a note worth 4 counts
  3. 8. Instruments that are hit or shaken
  4. 12. Clef for high notes
  5. 13. Italian word for soft
  6. 14. notes in the bass clef lines
  7. 16. clef for low notes
  8. 18. Italian word for loud
Down
  1. 1. notes in the treble clef spaces
  2. 2. Italian word for speed
  3. 4. silence
  4. 5. a note worth 1 count
  5. 7. a note worth 2 counts
  6. 9. notes in the treble clef lines
  7. 10. Instruments such as trumpets and trombones
  8. 11. Instruments such as flutes and clarinets
  9. 15. notes in the bass clef spaces
  10. 17. Instrument that are strummed, bowed or plucked