There are three artists under this name:
(1) Roy Wood’s post- ELO project.
(2) A ‘blackened’ heavy metal band from Finland.
(3) A heavy metal band from Belgium

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(1) Wizzard was Roy Wood’s post- ELO project. They made catchy glam-rock hit singles like “Angel Fingers” and “See My Baby Jive” with a retro, Phil Spector-style “wall of sound” production. At the same time, they produced decidedly odd, almost avant-garde albums like Wizzard Brew. Wizzard were active from roughly 1972-1975.