Voice of nature

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Across
  1. 3. :a pleasant musical sound made by different notes being playedor sung at the same tim
  2. 4. the way people or animals naturally react or behave, without having to think or learn about it
  3. 5. :to make a continuous low sound:
  4. 6. : to make a long, loud, deep sound
  5. 7. a feeling of great respect sometimes mixed with fear or surprise
  6. 9. a strong pattern of sounds, words, or musical notes that is used in music
Down
  1. 1. :the quality of being peaceful and calm
  2. 2. to speak very quietly, using the breath but not the voice
  3. 5. :causing sounds to be clear and loud
  4. 8. :basic and relating to an early stage of development