"Infinity on High" is the third studio album by the American rock band Fall Out Boy, released on February 6, 2007. The album features a blend of pop punk and emo influences, showcasing the band's signature sound. It includes hit singles like "This Ain't a Scene, It's an Arms Race" and "Thnks fr th Mmrs," which helped propel the band to mainstream success. The album received positive reviews from critics and debuted at number one on the Billboard 200 chart. It is noted for its introspective lyrics and diverse musical styles, reflecting the band's growth and experimentation during this period.