The 70s were a time of incredible musical innovation and originality, pretty much everything done since the 70s has been derivative.
.....and then there were the story songs....Harry Chapin....good music and better lyrics.
Saw them in El Paso back in the mid-80s. The venue was changed, I had bought tickets in the first row of the balcony. Imagine my delight when we were put in the front row. I so enjoyed it, they put on a fantastic show.
Also saw Poco and Little River Band in the same venue. Poco opened for LRB. Talk about getting your money's worth! Poco is seriously underrated in the pantheon of rock.
Now that I think about it, Buffalo Springfield and Jefferson Airplane/Starship were intellectual bands as well.
I started the decade of the 1970s at age 17 and ended it at age 27. I feel incredibly blessed to have been the perfect age to enjoy the bounty of incredible art that was produced in that era.
People of my generation were so spoiled back then. We assumed the quality and volume of great music would continue forever. Few of us saw the decline coming.