The Nightingale

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Across
  1. 4. in the prison
  2. 5. synonym of beautiful
  3. 6. a small area with lots of flowers and trees
  4. 7. a group of words told in a tune
  5. 8. second costly and heavy metal
  6. 9. staying free
Down
  1. 1. a ruler
  2. 2. a bird with the sweetest songs ever heard
  3. 3. some small mechanical parts
  4. 6. the most costly and heavy metal