RJD was pretty much heavy metal personified, a tiny 5-foot-4-inch sorcerer with a mangy mane, demonic eyes and sly grin, all coupled to a simply huge, operatic voice, a diminutive powerhouse who prowled the stage like a feline elf and who was, it turns out, also finely intelligent and well spoken, an actual gentleman in a genre known all too well for its bombastic, monosyllabic doltbuckets. A rare thing indeed.