Three Days Grace will extend their touring with newly installed singer Matt Walst beyond their two legs of shows with Shinedown. The band has just tacked on 11 new gigs that will take place during the months of April and May.

P.O.D., who have been out on the road with Three Days Grace and Shinedown, will share the stage with Three Days Grace during their May 7 stop in Corpus Christi, but their participation in the remainder of the tour has not been confirmed. The new trek launches April 17 in Portland, Maine, and runs through a May 17 finale in Youngstown, Ohio.

Three Days Grace have employed My Darkest Days frontman Matt Walst as their singer since the beginning of the year, revealing in January that longtime vocalist Adam Gontier had split from the group. Walst, the brother of Three Days Grace bassist Brad Walst, intends on balancing both of his groups for the time being. Three Days Grace have expressed their desire to continue their career even though Gontier is no longer with the band and plan to address their future once touring is complete.

Check out videos of Matt Walst performing with Three Days Grace on tour below. Tickets for the new trek go on sale Feb. 22 and links will be posted soon.

Three Days Grace Spring 2013 North American Tour:

4/17 -- Portland, Maine -- State Theatre
4/19 -- Stroudsburg, Pa. -- Sherman Theatre
4/21 -- Atlantic City, N.J. -- House of Blues
4/23 -- Huntington, N.Y. -- The Paramount
4/28 -- Ft. Lauderdale, Fla. -- Revolution
5/1 -- Atlanta, Ga. -- The Masquerade
5/7 -- Corpus Christi, Texas -- Concrete Street Amphitheater
5/10 -- Dallas, Texas -- The Palladium Ballroom
5/14 -- Libertyville, Ill. -- Austin's Fuel Room
5/15 -- South Bend, Ind. -- Club Fever
5/17 -- Youngstown, Ohio -- Wedgewood Entertainment Center

Watch Matt Walst and Three Days Grace Perform 'Riot' in Moline, Ill.