Despite being turned away for showing up extremely late to the taping of the tree lighting at Rockefeller Center in New York City, Mariah Carey made it on time to perform live at the event Wednesday night (Dec. 3). However, she didn't quite deliver in the same way we had hoped.

Dressed regally in red, Mariah started off her holiday hit 'All I Want for Christmas Is You' fairly strong. But unfortunately, the performance started to go downhill from there. Between breathing issues and singing off-key, this was definitely not one of the singer's greatest music moments. This is one show that will stick out as a contender for the worst vocal performances this year.

After watching the clip, we think Mariah might be kicking herself for not showing up to the Tuesday taping (Dec. 2) on time. Since she was on the phone discussing her pending divorce with Nick Cannon, the songstress was tardy to the party, causing NBC execs to turn her away.

Take a look as she performs the Christmas tune live and listen to the mic feedback below. You might want stick to the original recording.

Watch Mariah Carey Perform 'All I Want for Christmas Is You' at 2014 Tree Lighting Ceremony

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