Themes and variations

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Across
  1. 1. Played by 1 person
  2. 2. A group of musicians playing together
  3. 4. Tune starts at different times
  4. 5. Played by 2 people
  5. 7. This term means a sad piece of music
  6. 10. One continues held note
  7. 12. Repeated rhythm or melody
Down
  1. 1. Jumping notes
  2. 3. an extra tune over the main tune
  3. 6. Played by 3 people
  4. 7. This term means a happy piece of music
  5. 8. Smooth notes
  6. 9. The speed
  7. 11. At the same time