I have to admit that my first introduction to AC/DC was the album Back In Black with Brian Johnson at the helm. It wasn't until many years later that I heard their older catalog with Bon Scott. Once I did I was quite blown away. There was something very visceral about Bon Scott's approach to the songs. I think Rock 'n Roll Singer was an autobiographical tune and really explained a lot about him. It is just too bad that his flame was extinguished so early.