1) Caroller 2) December visitor 3) Holiday singer 4) Joyful singer 5) Noel singer 6) Performer on the road 7) Seasonal singer 8) Singer 9) Singer who makes house calls 10) Spreader of holiday cheer 11) Vocaliser 12) Vocalist 13) Vocalizer 14) Year-end singer 15) Yule vocalist 16) Yuletide singer 1) Caroller 
[n] - a singer of carols
caroller noun a singer of carols