The last time Kansas City ventured upon Future Islands was when the band opened for Dan Deacon’s sweaty, psychedelic dance party at the Pistol last May. The North Carolina trio calls its sound “post-wave,” and it’s a striking description: Crystalline synths and rusty drum-machine beats drift within the group’s New Order-influenced compositions. Scene-stealing frontman Sam Herring possesses a gruff growl, and he rumbles faux-English-accented, singsong vocals over Future Islands’ synth-pop flow. After falling in with Dan Deacon’s Wham City collective and signing to Chicago indie-label Thrill Jockey, the band has caught ears with its latest release, In Evening Air. It’s a fine fusion of pure ’80s dance pop and eerie, avant-garde theatricality.