Claude says:The Icelandic post-rock band known for Jónsi's falsetto and bowed guitar released this hours-long ambient work in 2019, a deliberate departure into pure sleep music. It's glacial, cyclical, made to dissolve into the background rather than command attention the way Ágætis byrjun once did. You picked it up in early 2026 and cycled through the numbered sleep tracks methodically, treating it less like an album and more like a tool.