This cheeky English singer made a huge splash with fans as one-quarter of swoonsome boy band JLS, yet he's managed to become a genre-hopping solo artist without skipping a beat. He shows off his cloud-grazing, MJ-inspired falsetto on 2015's “Get Stupid,” a retro-tinged, swinging soul number that perfectly sums up his solitary approach, while “Precious” reveals his more mellow side, strummed acoustic guitars sitting beneath his crystalline pop vocals. And if you're looking for evidence of the maturity Merrygold found when he struck out on his own, look no further than finger-snapping ballad “Too Late.”