When I was a child, I walked into a record store and asked the owner if he could recommend a saxophone record. I was in beginning band at school and didn't know any famous sax players yet. The clerk sent me home with this one.
The music was a bit over my head at the time, but I grew to love it. I wore out two vinyl LPs and finally got it in CD.
The orchestra was written and arranged, the sax and drum parts are completely improvised.
It's not jazz, it's not classical, it's not pop, it's not like anything Stan Getz did before or after, it's in a class by itself, and the sax improvisations are superb.
Focus - Stan Getz
(entire album)