Rationale is an East London producer who likes to keep his cards very close to his chest. We've no background or context to go off but his debut track, 'Fast Lane', speaks volumes. With a vocal reminiscent of our favourite Aussie crooner Josef Salvat doing most of the hard work, Rationale adds a simple blend of joyous guitars and simmering beats to the mix - the result is a fizzing, summer-friendly RnB/pop gem that'll become a fixture of just about every sunburnt afternoon spent lounging on London Fields in 2015. - DC