stupid crossword

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Across
  1. 2. Inventor of "furniture music"
  2. 3. Composer known for his musical interpretation of a Poe poem
  3. 5. The "father" of piano music/technique
  4. 9. An ensemble of vocalists
  5. 10. The "worst" interval
  6. 11. A short music piece typically before another
  7. 13. A seasoned composer?
Down
  1. 1. A string technique that involves plucking the strings
  2. 4. Name given to a group of closely placed notes
  3. 6. A movie about the inversion of time
  4. 7. A large musical work dedicated to mourning
  5. 8. The keyboards on an organ
  6. 9. Name given to pieces written for films
  7. 12. A genre of music introduced to America by Joplin