If 2008's extravagantly titled Med Sud I Eyrum Vid Spilum Endalaust was Icelandic band Sigur Ros' pop album, follow-up Valtari is a return to their quietly soaring, and occasionally cacophonous, past.
The intervening years have been a little fraught, what with shelving their first attempt at a follow-up to Med Sud and then going on hiatus.
In the interim frontman Jonsi Birgisson released an excitable and poppy solo album, and Sigur Ros a live album, Inni.
On Valtari they cover familiar territory. Its eight tracks, across 55 minutes, encompass everything from beautiful, eerie, and fragile moods to sometimes noisy, climactic and clamorous ones.
Though the songs are sounding more subdued these days compared to the rousing power they conjured up on 1999's Agtis Byrjun and 2002's ( ).