Born 1970. First four tapes I bought were Kilroy was Here by Styx, The Blind Leading the Naked by The Violent Femmes, Aerosmith's Greatest Hits, and Steppenwolf's Greatest Hits. I'm not sure what the fifth was, but it might have been Led Zeppelin's untitled fourth album.
The first concert I attended was Robert Plant's "Tall Cool One Tour" in 1988. The second was Bob Dylan's infamously bad 1990 performance in Charleston WV (seriously, there was an article in the paper complaining about it 15 years later). I think the third was B.B. King.