Sum 41 is a Canadian rock band that was formed in 1996. The band consists of members Deryck Whibley (lead vocals, guitar), Dave Baksh (lead guitar), Tom Thacker (rhythm guitar, backing vocals), Jason "Cone" McCaslin (bass, backing vocals), and Frank Zummo (drums). They are known for their pop punk and alternative rock sound. Sum 41 has released several albums and has been nominated for multiple awards throughout their career. They have been liked and appreciated by many music enthusiasts, and it is sad to hear that you're disappointed by the news regarding the band.