Singer/songwriter John Ryan has the Midas touch when it comes to minting hits. The man behind One Direction's “Story of My Life” and Pitbull's “Fireball” is a pop powerhouse with a knack for anchoring a catchy beat to slow-building melodies and anthemic choruses. Here Maroon 5's “Cold” is all escalating handclaps and soul pop falsetto, while Harry Styles' “Two Ghosts” is pure indie rock.