He's the co-writer behind most of Disclosure and Sam Smith's biggest hits - Latch, La La La, Stay With Me - as well as Jessie Ware's gorgeous Imagine It Was Us and Clean Bandit's Rather Be.
He recently tweeted a picture of himself playing Alicia Keys piano (see above) and, according to ASCAP, he's been writing new songs with Eliza Doolittle, including the intriguingly titled Dooodiddidydaboooo.
But before we get to hear that undoubted masterpiece, James John Napier (for that is his name) is launching a solo career of his own, and the first song out of the gates is called Give It Up.
If you've been paying attention, you'll know what's coming: Smooth, rounded soul melodies with a non-threatening undertow of sub bass. What you might not expect is the lyrical content - Give It Up is an anthem to sobriety from someone who's seen the dark side of the druqks.
The storyline is laid bare in the video, which is directed by Luke Monaghan (A$AP Rocky, Sam Smith, Disclosure). Watch below.