Christmas musicals

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Across
  1. 1. Supercalifragilisticexpialidocious
  2. 3. Slang for cool
  3. 5. Travel back home
  4. 6. Is it frosty?
  5. 11. Nothing like (Anagram)
  6. 13. "it is the east,... ... Is the sun" (Shakespeare quote)
  7. 14. Province of Canada
  8. 15. Half a dozen
  9. 16. ...Platt. Actor in The West Wing and Chicago Med
  10. 17. this would be wasted on Uncle David
Down
  1. 2. Mo Salah?
  2. 4. Opposite of East Centre Truth
  3. 7. A sad man
  4. 8. Is she Australian?
  5. 9. Learner and Loewe musical
  6. 10. A rags to riches tale
  7. 11. Mr Humphreys or Mr White?
  8. 12. Alan did (Anagram)