Some “classical” music is fairly recent. Probably should call it “orchestral” music.
Brahms, Beethoven, and Bach
Besides growing up listening to classical music (parents and grandparents had some of them on 78 rpm, even) 1950s-60s also the era of the likes of Mantovani, 101 Strings, etc. who did amalgams of popular music with orchestral. (Also kudos to Carl Stalling)
My favorites: Bach, Haydn, Chopin, Beethoven.
Some movie themes have a wonderful orchestral arrangement that I thoroughly enjoy (e.g. Dances With Wolves).