Related Clues:

• Went wassailing, once
• Circulated some winter airs
• Went door-to-door, perhaps
• Sang a 94 Down
• Saw your breath while singing, maybe
• Did seasonal songs
• Sang seasonal songs
• Sang "Silent Night" here and there
• Sang "Silent Night," say
• Sang for an audience of one, sometimes
• Sang for the neighbors, maybe