That carefree and innocent look contradicts the sound of 's fourth album. It doesn't look like it should begin with an austere, shuddering ballad in which achingly stews prior to resolving, as ice flows through her veins, "You're gonna make me put my fist through this mirror." Recorded in the group's native Gothenburg and evidently affected by the region's grim winter weather -- as well as ballads, and maybe a suffocating relationship -- contains little in the way of bopping pop. The driving lead single "Klapp Klapp," released almost three months prior to the album, isn't representative, though its stormy synthesizer undercurrents hinted at the overall mood. "Paris" is nimble as well but depicts a lonesome post-breakup scene. confessed to feeling uneasy about making ballads following the popularity of the debut album's "Twice," but there's no sense of apprehension, nor is there any attempt to rewrite that song here. Most brilliant is "Cat Rider," sinuous and spacy -- an alluring takedown that could fit into mainstream R&B radio playlists. "Pink Cloud," more like a slightly brightened update of ' highlight "Fortune," initially does almost as much with even less, then slowly levitates with impeccably arranged strings and mallets -- like they aimed to make an alternate ending to 's . The writing, playing, and production is predominantly the work of the group on their own, with two collaborators playing small but significant roles. (of ) co-wrote "Mirror," as well as one of the other darker highlights, "Killing Me," a slowly swaying kiss-off in which seethes, "I'll take my rocket ship and get the hell outta this/Nothin' that I'm gon' miss." That song, along with the satisfying closer "Let Go," was co-produced by ( , ). Subtract those contributions and this would still be the group's most accomplished work. ~ Andy Kellman