1) Circulated some winter airs 2) Did numbers for the neighbors 3) Sang 4) Sang at Christmas 5) Sang joyfully 6) Sang joyously 7) Sang Silent Night 8) Sung together 9) Voiced a Yuletide spirit 10) Warbled 11) Went door to door, possibly 12) Went wassailing, once Found on https://www.crosswordclues.com/clue/caroled