Mariah Carey was three hours late to record her performance for NBC's Rockefeller Center Christmas special on the evening of December 2, 2014. Then she apparently scrapped plans to record her performance altogether, opting to sing on live TV the next night. A live performance prevents post production clean up of any glitches or chances to "sweeten" wobbly audio. Click the video to hear the isolated vocal track from the pop queen's performance. The reviews are not flattering. Carey later apologized on Twitter.