Avril Lavigne's Goodbye Lullaby

Goodbye Lullaby is the fourth studio album by Canadian singer-songwriter Avril Lavigne. The album was first released on 2 March 2011 through RCA Records (Sony Music). Recording sessions began in November 2008, and took place over a period of two years, concluding in October 2010.

The album's songs contain mostly stripped down instruments, such as the piano and acoustic guitar. Every song on the album was written by Lavigne, with half of the album being written with co-writers.

So far the album has sold over 700.000 copies worldwide topping the charts in Japan, Australia, Germany, Greece, Taiwan, Korea, Singapore, Hong Kong and Czech Republic and debuted inside the Top 5 in over 15 countries, like the United States and Canada. The lead single of the album, What the Hell, was released on 11 January 2011 and reached the Top 20 in USA, The Top 10 in Europe and Australia and the Top 5 in Asia. The second single is Smile and will be release in April.

The album's and lead single's release dates had been pushed back several times. The album was originally scheduled for release on 17 November 2009. Later, in January 2010, Lavigne stated that the album cover had been photographed and the first single would be released in April followed by the album in June.