Goodbye Lullaby

Goodbye Lullaby is the fourth studio album by Canadian singer-songwriter Avril Lavigne, released worldwide on 2 March 2011 through RCA Records. Recording sessions for the album began in November 2008 and continued over a period of nearly two years, concluding in October 2010. Goodbye Lullaby is primarily a pop rock and pop album, more introspective than Lavigne's previous material.

Goodbye Lullaby has sold 1.5 million copies worldwide as of 2013. Three singles were released from Goodbye Lullaby. "What the Hell" was released as the lead single in January 2011 and achieved worldwide chart success, reaching the top 20 in the United States and United Kingdom, the top ten in Europe and Australia and the top five in Asia.