Folie à Deux (; French for "A Madness Shared by Two") is the fourth studio album by American rock band Fall Out Boy. Produced by Neal Avron, the album was recorded from July to September 2008 at The Pass Studios and The Casita in Hollywood, California. As the follow-up to the band's commercially successful 2007 effort Infinity on High, it was released by Island Records on December 10, 2008, after the original November 4 release was postponed to avoid conflicts with the United States presidential election. Like the band's two previous releases, Folie à Deux was musically composed by lead vocalist and guitarist Patrick Stump, with lyrics penned by bassist Pete Wentz. In regard to the writing process, the band considered Folie à Deux to be their most collaborative record at the time.