So what is the earliest concert you can remember going to

No cause he died early in the career of the band. 1980. And was only one member. I don’t view drug over dose to a plane crash. That drug over dose was a self inflicted wound.

Fair enough, although relatively speaking the crash happened only roughly ten years into the bands career and it the only key musician was of course Ronnie. Dean was an important dude but he wasn’t a musician. Crazy thing I learned the other day is that Aerosmith almost booked that exact same plane but decided against it because something felt off.