The Country Music Hall of Fame and Museum has devoted its largest rotating exhibit space to three experiences in a row centered on different American places covering roughly the same period - the 1960s and 70s. Dylan, Cash and the Nashville Cats (2015-2018) looked at Music Row here in the capital of country music. Outlaws And Armadillos (2018-2022) touched on Nashville but was chiefly about the burgeoning scene in Austin, Texas. Now, the Hall’s curators have turned their attention to Los Angeles and the astonishing confluence of talent and cultural upheaval that gave us country-rock. It wasn’t designed as a trilogy, but now it feels like one.