Watch Mariah Carey’s Awful Performace In New York City [ISOLATED VOCALS] [VIDEO]

Ughh....did Mariah Carey's voice know it's Christmas time? Cause what the heck was that...

Mariah opened to show last night on the Christmas tree lighting at Rockefeller Center in New York City. Here's the unedited version of her performance...

Annndddd here's the dreaded isolated vocals....

As her good friend Randy Jackson would say, "you're pitchy dogg!"