The pop landscape, not to mention the fashion scene, is always a duller place without Björk. So we're happy to report that the iconoclastic vocalist is back with a vengeance. After a four-year hiatus from touring (during which she spent quality time with her artist boyfriend, Matthew Barney, and their young daughter, Isadora), the Icelander is headlining this month's bigger-than-ever Coachella Music Festival. What's more, the Indio, Calif., concert coincides with the release of her much-awaited new album, out May 8. On Volta, she pairs up with hip-hop producer and hit single wunderkind Timbaland, promising tracks as catchy as Justin's but branded with Björk's taste for the bizarre. At times, she's backed by a ten-piece, all-female brass band.