Sveinn Rúnar Sigurðsson
Sveinn Rúnar Sigurðsson ( born 24 December 1976 in Reykjavík ) is an Icelandic songwriter , music producer , and medical doctor , best known for having composed two Eurovision Song Contest entries for Iceland , "Heaven" by Jónsi in 2004 and "Valentine Lost" by Eiríkur Hauksson in 2007 . 
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