Love this idea! It might help to put the release date in the subject lines going forward (10.20.80, in this case).
I was a freshman in high school and was just discovering, through the cool big brother of a new friend, The Clash, Sex Pistols, Elvis Costello, etc. My world was totally turned upside down. I'd gone to a small Catholic grade school in Northern Kentucky and was the only kid that was really into music. My friends listened to Foghat, Kiss, and the like, and I didn't dig any of that. So discovering punk and new wave opened up a whole new world.
I didn't learn about U2 until the "Gloria" video, so that is still to come... ;-)