múm - Hvernig Á Að Særa Vini Sína (How To Hurt Your Friends - previously unreleased) from 'Early Birds: A compilation of early recordings, rare music and forgotten songs from 1998-2000 or thereabouts.'
This track was included in the soundtrack to the 2009 movie 'The Exploding Girl' and was recorded for the band Gunni and Örvar were in before múm, called Andhéri. Vocals are by Örvar and now múm member (and amazing modern classical/experimental solo artist) Hildur Guðnadóttir, and were recorded in a bathtub full of water.
Album & ordering info - www.morrmusic.com/artist/Múm/release/588