Canadian rock band formed in Delta, British Columbia in 2001 (officially Theory of a Deadman through 2019, shortened to Theory thereafter, then back). Long-running lineup centered on Tyler Connolly (vocals/guitar). Discovered by Chad Kroeger of Nickelback and signed to Kroeger's 604 Records.
Released eight studio albums between Theory of a Deadman (2002) and Dinosaur (2023). Commercial peak: Scars & Souvenirs (2008, featuring "Bad Girlfriend") and Wake Up Call (2017, featuring "Rx (Medicate)").
