Listen Sigur Ros is deliberately making the effort to get into another musical world, off the beaten track. In a way, it's like "Kid A" by Radiohead, not everything will be revealed to you at first listen. The comparison with Radiohead is also not insignificant and the fact that Thom Yorke has insisted they open a series of European concerts for him and his group is a revealing indicator. The confluence of a trip-hop without machine, a somewhat mystical atmosphere and great moments of pop lyricism, we rappoche at times certain securities of Kid A or Amnesiac (Avalon, Ny Batteri could appear next the title track "Kid A" or "How to disappear ..."). However, Sigur Ros has a personality of its own and shares with his Icelandic compatriot Bjork, taste of the transformation and slow. With titles like "Starálfur", the "hit" album and "Agaetis Byrjun" that one of the key closer to the real nature of this album, as a hot water geyser in the country's largest cold. An exciting musical discovery but which needs to be tamed.