Green Day is an American rock band that started the punk revival in the early 1990s.

Their third studio album Dookie, released in 1994, brought the band the international breakthrough and sold more than 10 million copies in the US alone. The albums American Idiot (2004) and 21st Century Breakdown (2009) also reached high chart positions worldwide. In total, they have sold around 75 million records (as of 2014).