P.O.D.'s sixth studio album "Testify" was slated for a December 2005 release, but was pushed back to January 24, 2006. On November 15, 2005, P.O.D. released "The Warriors EP, Volume 2", which featured demos from the upcoming album, to help build up the fans' anticipation for the pending January release. The album's first single, "Goodbye for Now" (with a vocal tag by a then-unknown Katy Perry) went on to become a No. 1 video on MTV's TRL, along with having a solid radio presence, it also became the band's unprecedented 4th number one video on Total Request Live. The second single off the album, "Lights Out" was a minor hit, but was featured as the official theme song to WWE's Survivor Series 2005. In another contribution to WWE, they performed fellow San Diego native Rey Mysterio's theme song "Booyaka 619" at "WrestleMania 22". To promote their latest album, P.O.D. went on a nationwide tour called the "Warriors Tour 2: Guilty by Association", which began in April, and included the bands Pillar, The Chariot and Maylene and the Sons of Disaster.