On September 2, 2005, “Gefen” label released “Takk…” the fourth Sigur Rós studio album. It was recorded 2004 – 2005, at “Sundlaugin“ in Reykjavík, Iceland, and was produced by Kenneth Thomas, Jón Þór Birgisson, Kjartan Sveinsson, Georg Hólm and Orri Páll Dýrason.

Personnel:

• Jón Þór Birgisson – vocals, guitar, design
• Kjartan Sveinsson – keyboards
• Georg Hólm – bass guitar
• Orri Páll Dýrason – drums
• Amiina – strings, string arrangement 
• Ingrid Karlsdóttir – violin
• Matthías Stefánsson – violin
• Gréta Salóme Stefánsdóttir – violin
• Stefanía Ólafsdóttir – viola
• Eyjólfur Bjarni Alfreðsson – viola
• Kristín Lárusdóttir – cello
• Júlía Mogensen – cello
• Samúel Jón Samúelsson – trombone
• Össur Geirsson – tuba
• Frank Aarnink – percussion
• Álafosskórinn – choir
• Kenneth Vaughan Thomas – engineering, mixing
• Birgir Jón Birgisson – additional engineering
• Ted Jensen – mastering
• Ísak Winther – cover design
• Alex Somers – cover design
• Lukka Sigurðardóttir – cover design

Track listing:

All tracks by Jón Þór Birgisson, Kjartan Sveinsson, Georg Hólm and Orri Páll Dýrason.

1. Takk
2. Glósóli
3. Hoppípolla
4. Með blóðnasir
5. Sé lest
6. Sæglópur
7. Mílanó
8. Gong
9. Andvari
10. Svo hljótt
11. Heysátan