Perhaps we are not talking about the same documentary, but the one I am thinking of is this one which came out 15 years ago, I think:
I watched it (I think I purchased it because it was so good) on Apple TV or Prime Video. I am not sure if it is available to stream for free anywhere. I remember watching that and Muscle Shoals about the same time. Amazing pieces of music history!
Is there another documentary coming out this Christmas?
Thank you.