Ulvens Döttrar (The Daughters of the Wolf) consists of the three sisters Isabella, Johanna and Ella Grüssner. The sisters have been singing together throughout their childhood, but as the trio Ulvens Döttrar, they have been working for about ten years.
In Ulvens Döttrar the sisters combine their individual musical styles and careers in folk, jazz and rock into a singular musical interaction with both medieval and oriental influences. Their music is often described as evocative, and driving with a rhythmic base. The trio built up sound in their music with instruments such as fiddle, keyed fiddle, didgeridoo, djembe, thunder drum, frame drum, flute, rain stick and mouth harp.
Their main instrument, however, is voice and some pieces are wholly a cappella in three-part arrangements with tight harmonies. Most of the repertoire is now their own material. Ella composes music, Isabella writes the lyrics and Johanna organizes. From: https://www.last.fm/music/Ulvens+D%C3%B6ttrar/+wiki
