Three Days Grace is a Canadian rock band, formed in Norwood, Ontario, Canada, in 1992, under the name Groundswell. After a breakup in late 1997, the band regrouped in 1997 under its current name and with a line-up consisting of guitarist and lead vocalist Adam Gontier, drummer and backing vocalist Neil Sanderson, and bassist Brad Walst. In 2003, Barry Stock was recruited as the band's lead guitarist. The band is based in Toronto.
After signing to Jive Records, Three Days Grace have released three studio albums: Three Days Grace in 2003, One-X in 2006, (both of which have been certified platinum and double platinum in the United States and Canada, respectively) and Life Starts Now in 2009.