It's hard to pick just one song to pay tribute to the Prince of Darkness: With a career spanning over 50 years, Ozzy Osbourne has touched so many lives and made so much incredible music. But to me, and to a lot of metal fans, his greatest works were set in motion in 1979, when he met his greatest collaborator, Randy Rhoads. Though the two of them worked together for only a few short years, their innovative collaboration helped change the face of metal forever. Even among just those couple albums, there's so many great songs to choose from, but the one that best captures who Ozzy was to so many of his fans has to be Crazy Train.