I saw Gentle Giant in Sep or Oct 72 in Pittsburgh, PA. It was a Jethro Tull, Thick as a Brick tour. The opening act was introduced as a band from England that was playing the states for the first time. If memory serves, it was the first concert of the tour. Our seats were behind the stage but we were blown away by this new band anyways. I remember saying to my friend that this was a great band... And I was right.