So what is the earliest concert you can remember going to

I saw Foghat twice in a year and didnt even realize it. We were in Tahoe one night after skiing and this band was in "The Losers Lounge" At Harvey's I think. Anyway they are playing "I just want to make love to you" and I stopped and listened for about 3 more unrecognized songs and had to leave, wasn't even a cover charge. I thought it was a house band! Then about 10 months later sis took me to a tiny bar in Westminster, CA called the Bachanal and SOB, There was the same band playing! Then I realized it was Foghat from the bass drum cover, and then they started playing "Slow ride" and instantly I was taken back to 1977, laying on the couch when I was about 10 listening to "Foghat Live" on the record player while my big sister baby sat us kids on card night. There was about 20 people in the bar that night and they still played as hard as ever for us. Unbelievable...