Fat Dog have what is, at this point, a familiar backstory. The South London band cut their teeth playing shows at The Windmill in Brixton, the incubator for many of the UK’s most exciting, autre rock projects nowadays. They play a hard-hitting, technically impressive blur that’s kind of post-punk but as filtered through a kitchen sink of influences — see the dancey, old-timey folk stomp of their debut single “King Of The Slugs,” which dropped last fall after the band spent a year-plus getting hyped up by the British press before they had even put out a song thanks to their frenzied live shows.