Infinity on High is the third studio album by American rock band Fall Out Boy, released on February 6, 2007, by Island Records. Recorded from July to October 2006 at Pass Studios in Los Angeles, California, its music was composed by lead singer and guitarist Patrick Stump and the lyrics were penned by bassist Pete Wentz. The album features collaborations with new producers and guest artists, such as Babyface and Jay-Z, and sees the band experimenting with genres including R&B, soul, and flamenco. Fall Out Boy also utilized instruments such as horns, violins, and pianos, which had not been used on previous releases.

Fall Out Boy is an American rock band formed in Wilmette, Illinois, a suburb of Chicago, in 2001. The band consists of lead vocalist and rhythm guitarist Patrick Stump, bassist Pete Wentz, lead guitarist Joe Trohman, and drummer Andy Hurley. The band originated from Chicago's hardcore punk scene and was formed by Wentz and Trohman as a pop-punk side project; Stump joined shortly thereafter. The group went through a succession of drummers before Hurley joined. Their debut album, Take This to Your Grave (2003), became an underground success and helped the band gain a dedicated fanbase through heavy touring. Take This to Your Grave is cited as influential on pop-punk music in the 2000s.