Radical Romantics Fever Ray Mute   It has been nearly six years since Plunge, Karin Dreijer’s last album under the moniker Fever Ray. Equally well known for their band The Knife, on which they collaborate with their brother Olof Dreijer, Karin has made distinctive electronic music for over twenty years. Their latest, Radical Romantics, is a welcome return. In gestation since 2019, it is some of the finest work released by the Fever Ray project.   Another welcome return is one of collaboration. Olof helped to produce some of the recording and co-wrote four of the songs, the first collaboration