After surprising Three Days Grace fans during a performance in Nashville with the band’s original singer, Adam Gontier, the band has now announced the official return of Gontier to vocals, with Matt Walst remaining a lead vocalist as well. The esteemed rock veterans let fans in early on the shocking announcement, teasing a video across social media of Gontier and Walst linking up at the studio. Further details about new music and touring plans will be forthcoming. On the reunion, Adam Gontier shares: “I feel like it’s been seamless, better than we were expecting. It’s like we got back in a room together and picked up where we left off. We have been friends for so long it’s kind of natural to get back in the room together.” Matt Walst echoes and adds: “It’s been so much fun and inspiring ma...