ZZ Top...Great Stuff too. I consider Johnny Cash a product of the 60's. He had a prime time T.V. Show in like '68, '69.
I'll never forget when Cash sang "Sunday Morning Sidewalk" written by Chris Kristofferson and the line ..."wishin' I were stoned." It almost caused his show to be cancelled.
Some of Johnny's most patriotic music came from the 1970s.