As a teenager myself a few hundred years back, i had The Magicians Birthday by Heep, and if you have a listen, there maybe some hot bass lines on that too.
I cant remember anymore, been too long but it was a hell of an album. Hensley who was a brilliant writer , composed 99% of the tracks.
It was slated a bit by the press, against albums like Look at Yourself, and Demons, but i love Byrons vocal and Boxs' guitar work on that discette