Green Day is a punk rock musical group.
21st Century Breakdown is the eighth studio album by American punk rock band Green Day . American Idiot is the seventh studio album by American rock band Green Day . Green Day . 21st Century Breakdown was followed up by a trilogy of albums called ¡ Uno ! Revolution Radio is the twelfth studio album by American punk rock band Green Day , released on October 7 , 2016 , through Reprise Records .