Mariah Carey’s Horrific Performance of ‘All I Want for Christmas Is You” Totally Ruins Christmas (VIDEO)

Do any of you remember when Mariah Carey could actually sing? We can.

But listening to her unedited, isolated vocals from last night’s live performance at the Rockefeller Christmas Tree Lighting special makes us feel a bit cheated. Watching and listening to her sing “All I want for Christmas Is You” was the most horrible thing we did all day. Clearly, she had zero time to warm up.

She even kept the audience waiting for three hours before appearing.

Nick Cannon, what did you do to her? We doubt she’d even get a chair to turn around if she were competing for a chance to be on The Voice.

All we want for Christmas is to never have to listen to isolated tracks of Mariah singing ever, ever again.