In looking at 10 albums that changed my life, starting at number 10 is British Steel by Judas Priest. It was like nothing I had never heard of. It was HEAVY and it wasn't by accident. 

The singer was amazing, and I loved the song Steeler that had about 90 seconds of the band playing one note at the end of the song. I loved that (in listening to it tonight, it's VERY hard not to play air guitar). 

Tomorrow, a band I heard open for Ozzy who had music that was different I couldn't comprehend what I was listening.