They’re a fun band with some cracking tunes and they provided a vibrant night’s music last night at the Roundhouse, but where on earth did the idea come from that Noah and the Whale are a folk band? On this evidence, they’re about as folkie as Motörhead. Granted, they have a violinist in their line-up, but this is really no signifier of folkiness. In fact, the musician who sprang to mind most frequently during this pacy, compact show was Bruce Springsteen, especially on the material from the band’s recent Last Night on Earth album, with its heroic chord changes, its loose scansion and its tales of driving and escape from suburbia.