Mark Ronson: How I Wrote 'Uptown Funk'

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How I Wrote That Song: Mark Ronson "Uptown Funk!"

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Mark Ronson reveals the story behind the HUGE hit that is 'Uptown Funk'.

In a web-exclusive from 'The Tonight Show with Jimmy Fallon', Mark Ronson sat down to chat all about the story behind the longest reigning No.1 in Big Top 40 history.

It sounds like he had one hell of a journey constantly chasing Bruno Mars around the world to finish the track. We think someone needs to make a television show out of it (we'd totally watch it).