Somethings to look back on...

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Across
  1. 3. The notes on the lines
  2. 8. Monk music!
  3. 11. Displays information about bars and beats
  4. 13. A string instrument found on Irish coins...
  5. 14. High notes, low notes
  6. 15. Something you hit, but it's not a drum
  7. 17. Looks almost like a clarinet!
  8. 19. The distance between pitches
  9. 21. These little guys add half of a note's value to itself. Weird, huh?
Down
  1. 1. Two different notes made at the same time
  2. 2. Low, jazzy stringed instrument
  3. 4. A stringed instrument, but not an orchestra member!
  4. 5. The notes in the spaces
  5. 6. The odd one out in the woodwind family!
  6. 7. Longer than a crochet
  7. 9. The movement of notes
  8. 10. The squiggly brass family member
  9. 12. A long held note
  10. 16. A place where you'll find notes and rests...
  11. 18. Looks just like an oboe!
  12. 20. Lowest brass instrument