Some things to look back on...

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