Just a crazy hidden talent bang, banging into your home.

We all know Jessie J has an amazing voice.

gurl.com

With a million crazy and wonderful talents.

BBC

But we never knew she could do THIS. Who knew singing with your mouth closed could be so impressive, so odd, so satisfying?

vine.co

She revealed the party trick on The Graham Norton Show and you can watch the full clip here.

youtube.com

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