Another music puzzle

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Across
  1. 4. Glocken
  2. 6. Percussion instrument used at the start of Ravel's G major piano concerto
  3. 8. Composer of 'The Cold Song'
  4. 9. Solfege for E flat
  5. 10. According to Morcombe and Wise, "in the second movement, not too heavy on the _______"
  6. 13. "Have you tried the famous echo in the reading room of the British Museum" was a quote by this person
  7. 14. Composer of 'Collegium Regale'
  8. 20. Composer who unsuccessfully applied to study with Ravel and Stravinsky (they thought he was better than them)
  9. 21. In the 1975 animated comedy cartoon, the Tuba had this name
  10. 23. Bohemian composer whose greatest hobby was trainspotting
  11. 24. Composer who swerved onto a curb while driving and crashed between two shops in Bromsgrove in 1925
  12. 26. 6/8 is an example of this type of time signature
Down
  1. 1. Johann Christian Bach was known as the "_______" Bach
  2. 2. Billy Mayerl wrote 'Song of the Fir Tree' after hearing the tune while having a coffee in this country
  3. 3. Composer of 'The Sky at Night' theme tune (At the Castle Gate)
  4. 5. Q. Why did Bach have so many children? A. His organ had no "_____"
  5. 7. Overture by Wagner
  6. 10. Who said, "brass bands have their place: outside, and several miles away"
  7. 11. Type of vocal score where S and A share the treble stave and T and B share the bass
  8. 12. Michael Flanders' collaborator on 'Captain Noah and his Floating Zoo'
  9. 15. Parallel 4ths or 5ths in medieval music
  10. 16. Classic sci-fi with a score by John Williams about the French word, 'and'
  11. 17. British music popular in the 1950s
  12. 18. The interval between C and F sharp
  13. 19. The hymn-tune name of Psalm 23
  14. 22. 16th-century English composer
  15. 25. Baroque dance with two up-beats in common time. 'Hark the Herald Angels sing' was originally in this metre
  16. 27. Type of cadence (IV - I)