Released in January 2007 and recorded at Abbey Road Studios in London, Window in the Skies was the second single release from the compilation album 'U218 Singles'. Like 'The Saints Are Coming', a collaboration with Green Day, the track was produced by Rick Rubin.
Released as a 2 track CD, maxi CD, and DVD single, the b-side is a performance of Tower of Song, recorded with Leonard Cohen, for the movie 'Leonard Cohen: I'm Your Man'.
'Window' was nominated in the 'Best Pop Performance By A Duo Or Group With Vocals' category at the 2007 Grammy Awards.
The band performed Windows live for the first time in Japan on the Vertigo 06 Tour.
'It's a psychedelic pop song with 6/8 timing, you never hear that. It's very, very rare.' Bono