Their next album Monster was released in October 2012.
In October 2012, the band announced they would be celebrating the ten-year anniversary of their seminal album Alive or Just Breathing with a US tour through November/December 2012, in which the band played the album live in its entirety. Support on the tour came from fellow Massachusetts natives Shadows Fall…
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and ended on October 1.
In late October it was announced that the fourth album would be called Sempiternal with a tentative release in early 2013.
On September 20, 2012, Metallica announced via its official website that a new DVD containing footage of shows it performed in Quebec in 2009 would be released that December; fans would get the chance to vote for two setlists that would appear on the DVD.
Hansen stated in an interview in February 2012 that he expected the next Gamma Ray album to be released in January 2013. On 1 September 2012, the band announced Michael Ehré as their new drummer, replacing Daniel Zimmermann who chose to retire after 15 years of band activity.
In September 2012, it was announced that Megadeth would re-release Countdown to Extinction in honor of the album’s 20th anniversary. To mark the occasion, Megadeth launched a tour in which the band performed the album live in its entirety.
As of 2012, Anthem has signed with record label Universal Music and has released a new single “Evil One” in September 2012 and following with an album, Burning Oath , that was released in October 2012.
A special album release performance filmed and recorded at the Hollywood Palladium was issued in various formats through Shout! Factory in September 2012.
Paget had back surgery in September 2012. It was not immediately known what ailment he was suffering from. The band posted a picture with a caption that said that he was “doing great.”