Avril Lavigne is a Canadian singer-songwriter known for her distinctive pop punk and pop rock style. Her debut album, "Let Go" (2002), established her as a significant figure in the early 2000s music scene, with hits such as "Complicated" and "Sk8er Boi" highlighting her signature blend of catchy melodies and rebellious lyrics. Lavigne's music often centers around themes of youthful independence and self-assertion, which has resonated with a significant global audience and helped shape the pop punk genre.