Rock On The Net : Green Day Green Day 's 2004 rock opera American Idiot reignited the band' s popularity with a younger generation, selling five million copies in the U.S. The band 's eighth studio album, 21st Century Breakdown, was released on May 15, 2009.
Rock On The Net : Green Day Green Day 's 2004 rock opera American Idiot sold five million copies in the United States.