see also: Elf[?] (1971-1976), Rainbow (1974-1979), Black Sabbath (1979-1983; returns 1991) and Dio (1982-present)
Discography:
With Rainbow
With Black Sabbath
With Dio
... imposes on the owner of a copy of such data, DRM would allow additional restrictions to be imposed solely at the discretion of the copyright holder, through hardware and ...