Two, both at Armadillo World Headquarters in Austin -
Van Morrison (the R&B Van, not the Celtic mystic Van)
Little Feat with unannounced appearance by Linda Ronstadt
Oh yes, 17 years old. My dad was a true Audiophile and had a sweet Mac system with k-horns. (I still have them). Splurged and bought Dark Side of the Moon on reel-to-reel tape. I invited my girlfriend over to listen with me on a Friday night when we had the house to ourselves. Started off with a Led Zepplin album and a few beers. Put on the PF reel to reel and ended up having the greatest night of my life.
Ended up marrying that girl. The funny thing is I get a little excited every time I listen to Pink Floyd and she doesn't like them.