Matthew Jean Paul Walst (Norwood, Ontario , December 28, 1982), known simply as Matt Walst , is a Canadian singer , vocalist for the Canadian rock bands Three Days Grace and My Darkest Days.

Brad Walst is the bassist, backing vocalist, and co-founder of the Canadian rock band Three Days Grace. Brad and his wife Rhonda have 3 sons named James, Zack, and Graydon. Walst’s brother, Matt is currently the lead vocalist of Three Days Grace replacing Adam Gontier.

Neil Christopher Sanderson is the drummer, backing vocalist, and co-founder of the Canadian rock band Three Days Grace. He cites his influences as John Bonham, Danny Carey, and Stewart Copeland.