Fever Ray (a.k.a. Karin Dreijer Andersson of the Knife) just keeps getting weirder and weirder. We have to admit, though, the more bizarre she is, the more we like her. On Tuesday, Andersson released “Seven,” the digital-only fourth single from Fever Ray’s recent self-titled album (on Mute). The single features remixes from CSS, Martyn and Nic Chacona, among others. This video is stunning, and the song is a complete mishmash of anxiety and tranquility. How does she do it?