The loneliest Number

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Across
  1. 3. describes something boring and repetitive
  2. 5. saying something at the exact same time
  3. 6. unlike anything or anyone else
  4. 8. people coming together as one through a cause
  5. 9. a piece performed by one person
Down
  1. 1. a long speech given by a character in a play
  2. 2. a way of talking or singing without changing tone
  3. 4. relating to the one and only sun
  4. 7. imaginary horse with one horn
  5. 9. situation where you are alone