was asked to play some shows for Testament in 1992, to help the band with some live dates they had committed to. He accepted, even though he had already officially joined Slayer by this time. These shows temporarily reteamed Paul with his ex-Forbidden (band) bandmate Glen Alvelais. The November 27 show with this line-up at the Hollywood Palladium was captured on the Testament live EP Return to the Apocalyptic City. Testament's official website announced Bostaph rejoined the group in October 2007. The Formation of Damnation was the first Testament studio album of all new material in nine years, and the first to feature Alex Skolnick on guitar since 1992's The Ritual, also the first to feature bassist Greg Christian since 1994's Low was released on April 29, 2008. This is also the first full length Testament studio album to feature Paul Bostaph on drums. This album was awarded the 2008 'Album of the Year' by the Metal Hammer Awards. In June 2011, Testament began recording their next studio album, entitled Dark Roots of Earth, expected to be released on April 27, 2012. However, due to a "serious injury" (tendonitis in his wrist), Paul was not involved in the recording sessions; Gene Hoglan (who previously played on the band's 1997 album Demonic) filled in for him. He was expected to rejoin Testament when they tour to support the album. However, frontman Chuck Billy stated in December 2011 that Bostaph has left the band again. Return to Slayer (2013–2019) On May 30, 2013, Slayer announced via their official Facebook page that Paul Bostaph had returned once again to replace long-time member Dave Lombardo behind the kit on a full-time basis. He appeared on Slayer's twelfth and final studio album Repentless, and stayed with the band until 2019, when they disbanded after finishing their final tour. Other projects Bostaph is also a member of a tribute band called HAIL!. HAIL!'s rotating cast of members include Andreas Kisser, Tim "Ripper" Owens, David Ellefson, Mike Portnoy, Jimmy DeGrasso and Roy Mayorga. Ripper, DeGrasso, Ellefson and Kisser formed the band in late 2008. The band, toured Europe in 2009 and in June 2010 HAIL! is on their second European tour with the following line-up: Andreas Kisser, Tim "Ripper" Owens, Paul Bostaph and James LoMenzo. Due to the death of announced bassist Paul Gray, LoMenzo agreed on only one day's notice to fly to Portugal and rescue