In 1980 it became impossible for me to ever seen the Beatles or Led Zeppelin in concert. At least there are Led Zeppelin bootlegs around.
There are a handful of artists for which I can just queue up much or all their studio material and enjoy it for a while. These are 2.
I have the "In Through the Out Door" album running now. I listened to a concert at Earl's Court in 1975 earlier.