A lot of metal or heavy rock comes from rock n roll roots. It is difficult to define where one starts and the other stops. Rock n Roll itself came from Blues roots and how do you define Blues? Technically it could be classified as the predominant use of the Blues scale. Music evolves and then a...
Try telling Angus Young that.
Rock n Roll has evolved over time. The drum beat of AC/DC isn’t a straight 4/4 it has a rock n roll ‘swing’ to it. Brian Johnson comes onto stage and says ‘I hope you like rock n roll, cos that’s all we do’.
Angus Young even does the Chuck Berry moves on stage.
I agree that Steve Marriott on Tin Soldier is right up there but would add;
Robert Plant on Black Dog and a modern day alternative, Myles Kennedy ‘Back to Cali’ from his collaboration with Slash. Proper rock ‘no’ roll voice.
Also have to add Jay Buchanan of Rival Sons on their version of Wild...