Quite possibly the greatest Christmas song of all-time! It's a song that when you hear it, it puts you in a great mood and everyone sings along to it.... when I say everyone I mean, EVERYONE!
After Mariah Carey's Christmas show at New York's Madison Square Garden on Sunday night, her fans were so excited that they didn't want it to end, according to Billboard.
A video posted by a fan, shows a group of New Yorkers singing to fellow commuters across the subway tracks with Mariah Carey's "All I Want For Christmas Is You." And, Mariah Carey retweeted the video as well, check it out below.