My first LP was Vivaldi and my first non classic album that I bought was Queen - The Game, I still like to listen it.
First one, eh? It is a long time but if I remember correctly it was Deep Purple - Machine Head.
My first was the Presidents of the United States' first album. This was when I was a little tike.
Esther & Abi Ofarim, it was the first concert I visited too, the second one was Jimi Hendrix, who visited Germany, then. Very long ago...