Ok, so first of all, I don't think it was THAT bad.  Mariah Carey sang her hit Christmas song "All I Want For Christmas is You" last night at Rockefeller Center.  Apparently it was supposed to be taped ahead of time but she never showed up.  So she ended up doing it live and it was noticeable.

Part of the problem is that we all know her song from the studio recording many years ago.  This is outdoors, it was colder, and she's a bit older now.

Like I said though, I don't think it was that bad.  (My wife would disagree.)