Three Days Grace has announced that Matt Walst, lead singer of My Darkest Days, will be joining the band as the lead singer for their North American co-headlining tour with Shinedown, starting in Moline, IL on February 1st. Former lead singer, Adam Gontier, has left the group effective immediately due to a health issue.

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Three Days Grace will release their fourth studio album, Transit of Venus, on October 5.

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Dates for the Uproar Festival featuring Avenged Sevenfold, Three Days Grace, Seether, Bullet For My Valentine, Escape the Fate and more can be found in the replies.

Three Days Grace's tour dates with My Darkest Days can be found in the replies. Tickets go on sale this Saturday.

Three Days Grace, Chevelle, and Adelita's Way will be touring together. Dates can be found in the replies.