VIDEO: 4-year-old Kai sings 'When I Was Your Man,' kills us with cute

He has the hat. He has the swagger. 4-yr-old Kai is just a few decades away from being the next Bruno Mars. We can tell. Here he is performing on "Ellen."

From the "Ellen" YouTube page:

Kai, from Woodland, TX, initially won Ellen's heart when he sang "Grenade" back in January. Now he's back to serenade America once more and we're really, really happy he did.