I got this sometime in 1992-93? Apparently it's Black Sabbath (Earth at the time) doing a freestyle jam session. I really can't confirm it's authenticity and in fact there are a lot of earth session fakes going around. However, put side to side with "Song for Jim" and "The Rebel", it's not hard to see why this might be authentic. Unfortunately, I have no hard evidence that it is real. It's even more difficult trying to authenticate it without Ozzy singing. If anyone has any information on this, please let me know asap.