WIKIPEDIA:

“ múm () are an experimental Icelandic musical group whose music is characterized by soft vocals, electronic glitch beats and effects, and a variety of traditional and unconventional instruments.

History
The band was formed in 1997 by original members Gunnar Örn Tynes and Örvar Þóreyjarson Smárason, who were joined a year later by twin sisters Gyða and Kristín Anna Valtýsdóttir. According to Kristín, the band's name was not intended to mean anything. In 2002, after the first American tour, Gyða left the band to return to her studies in Reykjavík. Shortly after Gyða left, Ásthildur Valtýsdóttir joined for singing duties and Serena Tideman replaced Gyða on cello for a European tour. Then the ensemble evolved to include Ólöf Arnalds and Hildur Guðnadóttir. In early 2006, Kristín also left the band, although it was not officially announced until 23 November of that year.
Despite the departure of some of its members múm has remained together as a collective of musicians. Their fourth album, recorded during 2006, was released on 24 September 2007, entitled Go Go Smear the Poison Ivy.
múm toured the East Coast of the US with German musician Volker "Hauschka" Bertelmann In November 2007,. They returned in Spring 2008 with the same set [......] ”

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