Norway's Ulver took their name from the Norse word for "wolf." As a unit, they are one of the most diverse groups in North European music. Though initially regarded as a black metal band, they have worked in numerous genres -- all dependent on predetermined concepts -- rendering them an entity unto themselves. Active since 1994, early recordings like Bergtatt -- a ferocious, blasting, buzzing, blackened masterpiece -- they immediately shifted gears with the completely acoustic Kveldssanger and the recorded-in-a-field Nattens Madrigal, confounding fans and critics but enthralli...