I don’t know which would be the "most."
I sat in the front row center of a general admission 500 capacity club to see Emmy Lou Harris when she was touring Wrecking Ball. That made an impact on me.
The first time I saw Lucinda Williams was the same seat at the same club when she was touring Car Wheels and that also had a profound impact on me.
The first time I saw Stever Earle was at the same venue when he was touring El Corazon, but this time sitting on the floor right next to the stage. I was pretty much blown away by the experience.
The second time I saw The Cowboy Junkies was at an outdoor venue when they were touring Open. Before the sun had receded I had made my way up and was leaning against the front of the stage and I remember the feeling I had when they covered Thunder Road . . . I must have been grinning ear to ear and then I caught Margo Timmins’ eye and she winked at me . . . chills and goosebumps on a sweaty June evening in Pittsburgh. . . .