Bjork's latest, Utopia, is the logical follow-up to her previous work on Vulnicura, another collaboration with producer Arca. This ethereal, abstract, intriguing album was written to (not surprisingly) explore the concept of utopias, but also to process the current political, environmental, and personal challenges the singer was facing. There's an airiness to the album's heady, otherworldly tracks, an interesting effect conjured up by the incorporation of a 12-piece Icelandic flute section into the melodies. Utopia is Bjork at her best: boundary-pushing, challenging, and emotionally connected.