GUITAR

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Across
  1. 3. Often played with by a cat
  2. 5. composed of a hard shell and a seed
  3. 6. a link between to points
  4. 7. an opening in the upper board of a string instrument
Down
  1. 1. constantly anxious
  2. 2. keeps a guitar sounding right
  3. 3. a plectrum is used to do this
  4. 4. John doe
  5. 8. distinguishes the head from the torso