Theory of a Deadman (abbreviated as Theory) is a Canadian rock band from Delta, British Columbia. Formed in 2001, the band is currently signed to Roadrunner Records as well as 604 Records. The band also includes traits of other music styles, such as country and acoustic, as well as their post-grunge and alternative rock base. They have had a total of eight top 10 hits on the US Billboard Hot Mainstream Rock Tracks chart, including three No. 1 hits, “Bad Girlfriend”, “Lowlife” and “Rx (Medicate)”.
On March 29, 2005, Theory of a Deadman released their second album, Gasoline. After the release of the album, the band toured with Shinedown and No Address. Starting on March 1, 2005, Theory began a promotional tour, headlined by Breaking Benjamin and The Exies. Songs from Gasoline appeared in the soundtrack of the 2005 video game Fahrenheit, which was released under the title Indigo Prophecy in the United States.
The band performed the theme song to World Wrestling Entertainment’s No Way Out 2006 pay-per-view, a cover version of “Deadly Game” from the WWE Anthology album. The song was released on the WWE Wreckless Intent album. They also did a cover of “No Chance In Hell”, the theme song for WWE chairman Vince McMahon. The song was released on WWE The Music, Vol. 8 on March 25, 2008.They also performed the theme song for the 2011 edition of the WWE pay-per-view SummerSlam.
On April 1, 2008, Theory of a Deadman released their third album, Scars & Souvenirs, from which they released eight singles: “So Happy”, “By the Way”, “Little Smirk”, “Bad Girlfriend”, “All or Nothing”, “Hate My Life”, “Not Meant to Be”, and “Wait for Me”. The song “By the Way” features vocals from Chris Daughtry and Robin Diaz. On April 6, 2008, they appeared at the Juno Awards in Calgary, Alberta, after making various stops across Canada in a promotion known as Journey to the Junos.