I was watching the Classic Albums: Joshua Tree special, and there was a song that they show a very short snippet of, and I really, really loved it but I don't know what it is. It comes on right after they talk about Larry's drumming improiving when he knows someone is really pushing him. Opens with Edge on the guitar, v. blues/rock. Bono is in a large white shirt, cowboy hat. The only words I hear are "I...I believe in love...". It's Joshua Tree era, based on clothes and haircuts, etc.
I googled it but only came up with "Exit", which is def. not it. Can anyone help me out? That guitar part really caught my attention!