It turned out it was Counting Crows we were hearing! They were one of my all time favorite bands in high school and college and I still know all the words to August and Everything After. We showed up right when they started playing Mr. Jones! And while it was sold out and we couldn't go into the park, we weren't the only ones who'd wandered over for a listen. These iphone photos do no justice, but the view was pretty good, and the sound was perfect.
What a well and cheaply summer Tuesday night. I think 16 year old me would be proud.