Music crossword puzzle

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Across
  1. 4. A Polish romantic who composed music almost exlusively for piano
  2. 8. A musical performance given by just one musician or a musician with accompaniment
  3. 9. A person who plays a musical instrument
  4. 11. A school that offers vocational (upper secondary level) music education
  5. 12. Most modern pianos have three ___ (what)
  6. 14. A popular instrument that has 88 keyes
  7. 15. A song for a classical singer with piano accompaniment
Down
  1. 1. An ensemble of five musicians
  2. 2. A large ensemble of instrumentalists
  3. 3. ...the Viennese school of Haydn, Mozart and ___ (who)
  4. 5. A live music performance in front of an audience
  5. 6. An American minimalist who composes "music with repetitive structures"
  6. 7. According to Ian Curtis, it bites hard
  7. 10. The devil's interval
  8. 13. A collection of short musical pieces