The passing of a heavy metal god occurred yesterday. Ronnie James Dio performed with Elf, Rainbow, Black Sabbath, Heaven & Hell, and his own band Dio. One of the most influential metal vocals in history with such hits as Holy Diver, Man on the Silver Mountain and Rainbow in the Dark. He also popularized the "devil's horns" seen at all concerts. Who'd have thought that Ozzy would outlive him? Bang your heads.