Despite their name, change is nothing new for The Concretes. The eight-piece music collective from Stockholm, Sweden did start out as a female three-piece after all. So in 2006, when lead singer Victoria Bergsman up and left the band, drummer Lisa Milberg got out from behind the kit and took over vocal duties. Tuesday night’s show at the Rock N Roll Hotel, a seemingly short but very sweet hour-long set, gave D.C. their first look at Milberg as the band’s new frontwoman.