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The Capital Late Show with Marvin Humes 10pm - 1am
10 December 2017, 18:40 | Updated: 10 December 2017, 19:50
THE VOCAL CHORDS ON HER! WOW.
There's a reason why Louisa Johnson won 'The X Factor'. It's because she could literally sing the ingredients on a can of spaghetti hoops and it would sound magical.
That's why Rob Howard decided to get her to show off her talent for everyone at #CapitalJBB backstage.
After she rocked The O2 singing Mariah Carey's classic Christmas anthem on Saturday, Rob asked the 'So Good' gal to perform 'All I Want For Christmas Is You' totally a cappella, and...
We wouldn't even judge you if you wanted to listen to this right up until August.
Wait until you hear Louisa sing some of the biggest songs of the year. She's good, ain't she?