Dexterous rapper B.o.B. went from celebrated mixtape hero to hip-hop superstar nearly overnight. His rapid-fire delivery merges with a bright, buoyant pop sound on the bouncy "Magic", while the more sombre, inspirational anthem "Nothin' On You" surges with eager, earnest devotion. His ability to mesh pop, hip-hop and the grinding textures of EDM is at its peak on the Taylor Swift collaboration "Both of Us". This fusion of unlikely bedfellows—and his unwavering devotion to pop music's most exuberant emotions—makes B.o.B. a major star who consistently delivers sure-footed rhymes.