Singer/songwriter Adam Hambrick has done as much for the evolution of ‘10s country as anybody out there. He grew up with a love of rock, pop, R&B, and country, and they all come together as naturally as the weather in the hits he's penned for hot country artists, going beyond twang for the slinky funk underpinnings of Justin Moore's "Somebody Else Will" and the Motown-inflected locomotion of Lindsay Ell's "Waiting on You."