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There were so many excellent bands in the 70's I have trouble even putting Black Sabbath in the top 10
not a mention for Uriah Heep with Demons and Wizards or Stealin or Easy living not the longevity of Sabbath but Sabbath has nothing compared to stealin
View: https://www.youtube.com/watch?v=ImlxitnJq3w
View: https://www.youtube.com/watch?v=m4o--q6xuvs
They were not thrash however. They were actually the NWOBHM. Great music both of them. I love Maiden and Motorhead but they were not thrash.