Green Day have spoken about Billie Joe Armstrong's stint in rehab, insisting that his treatment "is no joke".
In one of the biggest YouTube memes of 2012, Green Day singer Billie Joe Armstrong launched into what - at the time - no doubt seemed like a righteous tirade. The trio were pushed aside by festival organisers, and responding by trashing their instruments in a memorable display of destruction.
Since then, though, it's become apparent that all is not well with the singer. Entering rehab, Billie Joe Armstrong sought treatment for substance abuse - with his band mates publicly voicing their support for his decision.
Speaking to Rolling Stone, producer Rob Cavallo said: "His rehab is no joke. He's under medical supervision for a while to get him clean." Continuing, Cavallo refused to put a timescale on Armstrong's recovery: "His doctors are still evaluating. All I can say is I don't know if we'll see him before or after Christmas. It's basically undetermined when he'll be back."
Meanwhile, Metallica have stepped in to replace Green Day at New Orleans' Voodoo Music and Art Experience later this month. Guitarist Kirk Hammet told Fuse: "We discussed it between the four of us and we all said, 'Yeah'. It would be a great thing for us to do and it would also be great to help out Billie Joe because he's a friend of ours and we love Green Day. If we can help them out in any way possible, we're always happy to do it because we love those guys."
Lars Ulrich added in a statement: "Our good friends and fellow Bay Area residents Green Day had to unfortunately cancel their plans to be there, so we are more than happy to fill in for them in our own unique way."