Watch: Mary J.Blige & Jessie J perform Xmas duet on UK's ‘The X Factor’...

Tonight on UK's ‘The X Factor’ saw R&B veteran Mary J. Blige and Jessie J perform their cover rendition of the Bing Crosby classic ‘Do You Hear What I Hear.’

Jessie J was serving Lisa Stansfield realness but she sounded like a sheep having a seizure. Her vocals would be much more enjoyable to listen to if she wasn't so vibrato. So damn overkill. She really needs to learn to tone it down. It's not always cute. Mary sang within her range but is anyone really checking for her Christmas album ‘A Mary Christmas’?

Thoughts?