The Aussie dance-pop act Cut Copy has had a pervasive influence on club life since chief songwriter Dan Whitfeld turned his DJ gig into an international success story with a few friends in the early Aughts. Indeed, the quartet arrived fully formed, managing to influence a whole subculture — in Nashville, Cut Copy’s imprimatur could easily be seen at Buddytown and Left Can Dance parties — within a few years of getting started. And yet somehow Cut Copy has never stepped foot in Music City. This totally reprehensible situation ends tonight when the band turns Marathon into a hot frenzied mess, washing Nashville in the bright light neon love of its formidable electro-pop oeuvre, which spans four consistently great LPs and a bounty of stunning remixes. Turkish Prison and the rising Hyperdub artist Jessy Lanza open.