Extinct or rare wind instruments

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Across
  1. 2. double bass with accessories
  2. 3. lives on in organ specs
  3. 6. hautbois pour la chasse
  4. 7. Bruce Dickey's the modern guru
  5. 9. snaky but fangless
  6. 11. a pair needed for K 626
Down
  1. 1. favorite of Renaissance poet-musicians
  2. 4. medieval drone
  3. 5. pocket bassoon
  4. 8. erotic double reed?
  5. 10. another pair needed for BWV 118