It was announced on 11 November 2011 during a news conference at the Whisky a Go Go club on West Hollywood's Sunset Strip that the original Black Sabbath line up of Ozzy, Tony Iommi, Geezer Butler, and Bill Ward would reunite for a world tour and new album, to be produced by Rick Rubin. Bill Ward dropped out for contractual reasons, but the project continued with Rage Against the Machine's Brad Wilk stepping in for Ward on drums. On 21 May 2012, Black Sabbath played at the O2 Academy in their hometown Birmingham, their first concert since their reunion. The album, entitled "13", was released 11 June 2013, and topped both the UK Albums Chart and the US "Billboard" 200.