Grizzly, dangerous, raw — Lemmy Kilmister's songs, both in and out of Motörhead, embodied the spirit of rock & roll perfectly. From the breakneck, born-to-lose anthem "Ace of Spades" and rumbling paean to loud living "Overkill" to bristly headbangers like "Hellraiser" and his Probot contribution "Shake Your Blood," he wrote the soundtrack to his life. His influence stretched from hard rock to punk to heavy metal. And though Lemmy died at age 70 of an aggressive form of cancer, as was reported on Monday, he left behind several lifetimes' worth of some of the most iconic rock songs ever snarled. Here are 20 of the best.