Indeed, you are right, I was not even close to this concert, but I wish I was.
I literally grew up with such music, both my parents listened to the type of Canned Heat, Jim Croce, Janis Joplin, Bob Dylan, Cat Stevens, Pink Floyd and....loads of other classical rock and blues groups/singers!
I am so glad I own lots of vinyl records from 60's and 70's, they are not mine yet but some day they will, I even have one of my father's best and hottest vinyl players.