Frank Ocean didn't become an R&B star by cribbing from just the Hall of Famers of his genre. He nods to one of soul's true greats, Stevie Wonder, by using his trademark melodic keyboards, while the soft quavers in his voice recall Aaliyah. But the soothing guitars of The Bends-era Radiohead are just as important to his rich, often melancholy scores, and the vivid characters in his songs are as colourful as David Bowie's larger-than-life creations.