“Green Day, the chart-topping pop-punk band born in Berkeley, is morphing into a collective playwright, and it will unveil its first effort at Berkeley Repertory Theatre in September, the group announced Monday. The musical titled ‘American Idiot,’ based on Green Day’s 2004 Grammy-winning, multi-platinum album of the same name, is being developed in collaboration with Michael Mayer, the Tony-winning director of Steven Sater and Duncan Sheik’s ‘Spring Awakening.'”