Our Lady Peace's unconventional post-grunge instrumentation, punctuated by Raine Maida's volatile vocals, turned them into platinum-selling superstars in Canada during the '90s. But it's what they did after reaching the top that shows their longevity. Bringing in Metallica producer Bob Rock to change the band's identity, they embraced a more conventional sound and broke through in the U.S. with 2002's Gravity—in many ways a stylistic switch from the sound they were known for. They've since stayed musically restless, embracing creative detours on subsequent albums.