In the live recording of "Fat Lip," Sum 41 was at a pivotal point in their career, as it showcases their energetic pop-punk style during a peak period in the early 2000s. This song, from their 2001 album *All Killer No Filler*, was a significant hit and contributed greatly to their rise in popularity, earning them a spot in the forefront of the pop-punk movement. By the time of this performance, the band had already released their successful debut album, solidifying their presence in the music scene. Interestingly, *All Killer No Filler* marked a shift in their sound, blending punk rock with elements of rock and alternative, which attracted a diverse audience. The live performance reflects the band's dynamic energy and their ability to connect with fans, a hallmark of Sum 41's enduring appeal in the rock genre.