Antonio Vivaldi is amazing, love the power, the way he can make all instruments compliment each other in harmony. Perfection.
Personal favorite, not 'actual' old school classic music - quite more modern, in sound too, but still somewhat within the same range, yet not quite;
Ludovico Einaudi - Ascolta (
cover with DL).
A real classic,
Handel - Sarabande - I personally prefer it in
D minor though.
Gotta give it up for Disney, whatever people might think of them and all the conspiracy bs they did introduce a lot of generations to amazing classical and similar music.