@dasoverkill Ok but my original comment still stands that this is the first speed metal song even though people always mention "Motorhead - Overkill" and "Judas Priest - Exciter" as the first first speed metal songs.
In response to my comment five years ago, both Rob Halford and Tony Martin have sung this on live recordings. Still it's hard to believe Dio never sang it in his years of touring with them. Don't get me wrong, Ozzy slays this song. But it seems like a perfect song for Dio.