Inní Mér Syngur Vitleysingur

"Inní mér syngur vitleysingur" (Icelandic for "Within me a lunatic sings") is the second track on Sigur Rós' fifth album, Með suð í eyrum við spilum endalaust. It is the first single from the album, and was released on September 8, 2008. A music video for "Inní mér syngur vitleysingur" was also released. It shows the band playing at the free Náttúra (Nature) concert in Reykjavík on June 28, 2008. Vocals from this track were sampled by the experimental electronic duo, Crystal Castles, on their second self-titled release Crystal Castles (II).