Valtari is the sixth studio album by Icelandic post-rock band Sigur Rós. It was released on 23 May 2012 by Parlophone. The album reached number eight on the UK Albums Chart and seven on the Billboard 200. The album was met with positive reviews as well with Metacritic, which assigns a normalised rating out of 100 to reviews from mainstream critics, the album received an average score of 74, based on 36 reviews, indicating "generally favorable reviews".