Avril Lavigne is a Canadian singer-songwriter. She is known for her breakthrough debut single Complicated from her 2002 album Let Go, which also included the hits Sk8er Boi and I'm with You. Lavigne has reinvented herself and experimented with different musical styles since then, sometimes moving away from her pop-punk roots on releases such as 2007’s The Best Damn Thing, 2011’s Goodbye Lullaby, and Head Above Water in 2019.