Mariah Carey's performance at Rockefeller Center might ruin Christmas

This is worse than discovering the truth about Santa (that he's diabetic, of course)

Mariah Carey, once considered an angel among us, a heavenly voice sent to earth to save our souls, the diva among auto-tuned pop stars — has fallen from grace following a shaky performance at Wednesday's annual Rockefeller Tree Lighting ceremony

See also: 35 Christmas songs to officially kick off the holidays

Carey, 44, performed her classic Christmas anthem "All I Want for Christmas is You," but instead of slaying the high notes, as per usual, her voice could barely stay in key

Here's a closer look:

According to TMZ , Carey was supposed to pre-tape her performance but blew it off due to a call about property settlements with a divorce lawyer (Carey is divorcing Nick Cannon). She supposedly arrived three hours late, after fans waited in the cold, but NBC execs were over it and sent her home Read more...

More about Viral Videos, Christmas, Mariah Carey, Music, and Watercooler