In the live recording titled “Sum 41 FT Tommy Lee And Rob Halford Rock Medley Live MTV 20th Anniversary,” the band was at a significant point in their career. This performance occurred in 2001, shortly after the release of their critically acclaimed album “All Killer No Filler,” which debuted in May 2001 and featured hit singles such as “Fat Lip” and “In Too Deep.” This album marked Sum 41's mainstream breakthrough, showcasing their energetic punk-pop sound and solidifying their place in the music scene. The collaboration with iconic artists Tommy Lee and Rob Halford in this MTV event reflects not only their rising popularity but also their desire to connect with rock legends. This performance demonstrates the band’s ambition and versatility, highlighting their ability to engage with a diverse range of musical influences while gaining visibility on a prominent platform like MTV during its golden era.