Video: Mariah Carey’s disastrous lip-syncing failure

Mariah Carey had a pretty awful day at work at the Jazz and Blues festival in Jamaica Saturday night - when she forgot the words to her own song.

Unfortunately, as she stumbled with her vocal, her lip-sync track kept playing 'Fantasy' with gusto, as Mariah tried her best to mouth along with the words, seeming flustered and unable to catch the right part of the song.