So many tracks from the 1st 5 Black Sabbath albums. I’ll pick a few.
War Pigs - from their 2nd album Paranoid.
Fairies Wear Boots - from their 1st album Black Sabbath.
Children of the Grave - from Master of Reality.
Snowblind - from Volume 4.
Sabbath Bloody Sabbath - from their 5th album with the same name.