Sum 41

The Profile

Sum 41 is a Canadian rock band associated with pop punk and punk rock, formed in 1996 in Ajax, Ontario. Reviews highlight their early pop-punk success and a notable heavier shift culminating in the album “Chuck,” followed by more divisive later-era releases.

Publicly known: formed in Ajax, Ontario in 1996; widely associated with pop-punk/punk rock; “All Killer No Filler” (2001) was their breakthrough; the band later incorporated heavier/metal influences on “Chuck” (2004).

Across these reviews, Sum 41 are framed as a Canadian pop-punk band that periodically swerves into darker, heavier territory. “Chuck” is repeatedly treated as the high point, praised for its aggressive, metal-leaning expansion. “Underclass Hero” is the most divisive, often criticized as a pop-punk regression after the heavier era. “Screaming Bloody Murder” splits reviewers between “excellent comeback” and “mediocre duplicate.” “13 Voices” is seen as a cleanly produced, darker, vigorous record shaped by personal and lineup turmoil.