Deryck Jason Whibley (born March 21, 1980) is a Canadian musician and producer, best known for his work as the guitarist, lead vocalist, songwriter and producer of the Juno Award-winning and Grammy Award-nominated rock band Sum 41. Following drummer Steve Jocz's departure on April 17, 2013, Whibley is now the longest-lasting member of Sum 41. Whibley married fellow singer Avril Lavigne in 2006. The couple occasionally performed together, and they have spoken about their relationship in interviews.