
When it was announced that Green Day front-man Billie Joe Armstrong was headed to rehab following his rant at the iHeartRadio Music Festival, many people were cynical. Some viewed the whole move as a stunt. But, Warner Brothers Chairman Rob Cavallo, the producer of Green Day's Dookie and American Idiot albums, says Billie Joe's situation is serious:
"His rehab is no joke. He's under medical supervision for a while to get him clean...I don't know if we'll see him before or after Christmas. It's basically undetermined when he'll be back."








