Efterklang's post-rock experiments were first heard in December 2000, when childhood friends Casper Clausen (vocals), Mads Brauer (computer), and Rasmus Stolberg (guitar) -- all three having recently moved to Copenhagen from the tiny Danish island of Als -- joined musical forces with pianist Rune Mølgaard (piano) and drummer/trumpeter Thomas Husmer. From the start, the bandmembers took a D.I.Y. approach to their music, handling all aspects of songwriting, recording, and production in their Copenhagen practice space. The self-released Springer EP was issued in 2003 on the band's own Rumraket label, with 500 copies packaged in fake fur. That same year, video artist Karim Ghahwagi joined the ensemble and began pairing Efterklang's music with integrated video collages.