Christmas Songs!

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Across
  1. 3. A toy won't make her happy on Christmas day (6)
  2. 7. she rocked around the christmas tree at age 13 (6/3)
  3. 12. The choirs are singing with this in 'O Come All ye Faithful' (10)
  4. 13. 'she's candy apple red with a ski for a .......' (6)
  5. 14. One of Darlene Love's songs featured on Phil Spector's Christmas Album (11/5)
  6. 16. Commonly found crooning at Christmas with Bowie (4/6)
  7. 17. The New York Police Department were singing this one (6/3)
Down
  1. 1. Boney M's 'Mary's Boy child/........ (2/2/4)
  2. 2. "I wish you a hopeful Christmas, I wish you a..............(5/3/4)
  3. 4. John and Yoko sang with this community choir(6)
  4. 5. Which royal guy looked out on a certain feast (9)
  5. 6. These guys are feigning joy and surprise over gifts they depise over mulled wine (3/8)
  6. 7. This Irish figure appeared in 1984, 2004 and 2014 (4)
  7. 8. Coldplay sang about Christmas........(6)
  8. 9. This Christmas, the Ramones don't want to.....tonight (5)
  9. 10. Hop aboard on a turntable with him this Christmas (5/4)
  10. 11. Eartha Kitt asked for one of these from Santa(5)
  11. 15. Christmas No.1 winners in 1973 (5)