"Nine hits, one album" claims the sticker on the front of this 20-year-old Floridian's debut – an optimistic way of selling a record that's produced precisely two hits to date. To give Jason Derülo credit, though, there will undoubtedly be more. He's followed an increasingly well-trodden path to R&B success by first serving an apprenticeship as a songwriter (for Lil' Wayne, Diddy, et al), so he's got the craft of making modern, hyper-slick tunes nailed. It's no surprise that his first single, the Imogen Heap-sampling Whatcha Say, sold 3m downloads: its chattering beat, and deceptively simple hookline add up to incredible catchiness. He achieves the same infectiousness on The Sky's the Limit, with its Flashdance … What a Feeling sample. The busy production feels impersonal, though, and producer JR Rotem has made far too free with the Auto-Tune, robbing Derülo of the idiosyncrasies that make an album worth hearing.