Ammar Malik has penned some of the most indelible pop hooks of the ‘10s, and his anticipation of what pop listeners want to hear is unparalleled. A former protégé of hitmaker Benny Blanco, Malik developed his musical chops in rock bands. But songs like Nick Jonas' smoldering “Chains,” Lady Antebellum's electro-twang stomp “Compass,” and Maroon 5's jittery “Moves Like Jagger” show how he can supercharge any style of pop.