Three turns to the left

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Across
  1. 2. how 3 men travelled in a nursery rhyme
  2. 3. how many make a crowd
  3. 5. 1960s-70 rock band with "3"
  4. 6. bad habit
  5. 8. three Christmas visitors
  6. 11. Alexandre Dumas' famous threesome
  7. 12. last night's dinner, again
  8. 16. 3 balls 2 strikes
  9. 18. He painted ceilings with his left hand
  10. 19. type of guitar or drum
Down
  1. 1. added to public drinking water
  2. 4. left town
  3. 7. who might be left at the altar
  4. 9. English for awkward/French for left
  5. 10. fairy tale villain
  6. 13. 3 times 4
  7. 14. left-handed
  8. 15. barbeque
  9. 17. France winemaking region