Although I was never in band (I was more of a chorus girl, myself!) I've heard people talk about 'first chair' and 'second chair' so I found this part amusing, that some kid was excited about Glenn quitting the band because it gave him an opportunity to try out for Glenn's chair.
Also, the fact that it was years later that you figured out that Glenn Frey of the Eagles was "that guy" that you knew of from high school had me cracking up! I would have thought that he has a street named after him up there and stuff like that.