Wondering what Yeasayer sounds like? Just imagine if the Depeche Mode catalog were reduced solely to songs sung by Martin Gore, but they were infused with an art-school imperialist’s predilection for crazy African and Middle Eastern rhythms and then pumped at full volume out of water-logged speakers. Aided by the infectious singles “O.N.E.” and “Ambling Alp,” the Brooklynite electro-psych troupe was a top-tier indie darling following the 2010 release of their acclaimed sophomore effort Odd Blood. Two years later, hopes are high that the blogosphere will still give a shit about the band when its third LP, the unfortunately titled Fragrant World, drops on Aug. 21. “Henrietta,” the first track to emerge from the record, shows the band further honing the new world, neo-New Wave, smooth, sensitive-voiced pop pastiche that made Odd Blood an underground hit. Hear the rest, or at least the most, of the sonic fragrance at this Nashville stop — the band’s first since its 2010 Next Big Nashville appearance — on the album’s pre-release jaunt. Similarly world-music-obsessed Garden State indie rockers Delicate Steve open.