“Crater,” by Gord Downie, The Sadies, And The Conquering Sun, is not the work of three distinct bands. Rather, that’s the name of a singular band with a singular purpose. The brash, frenetic “Crater” works wonders as an introductory tune, showcasing a lively and unbridled energy. Lead singer Gord Downie proves to be a compelling voice, with his vocals warbling, searching for steady ground. “Crater” is by no means perfect; but that’s hardly the point. Because “Crater” is something much more interesting: fearless.