Rachmaninoff's piano concertos are usually pretty good (a shame that he was quite anti-communist).
Sibelius's Violin Concerto and D minor (his opus 47) is pretty good as well.
Scarlatti's Sonatas have also been great every time I've listened to one of 'em.
Gustav Mahler's Symphony No. 5 is also a favorite.
You may have noticed that these songs aren't household names (like "the well-tempered clavier" or the "moonlight sonata") but I'm trying to avoid those for now.
Also, not a composition highlight, but shout-out to Ryuichi Sakamoto.
What are your favorite compositions/symphonies/sonatas/etc. of classical music in general? Can range from anywhere to early baroque to the Soviet composers to the 21st century and so on and so forth.
Good picks! I've been listening to Richter's Rach 2 a lot recently, so good
Vivaldi Violin Concerto in B minor rv390
Bach Sonatas for Viola da Gamba BWV1027-1029
Ravel Piano Trio in A Minor
Schumann Piano Concerto in A Minor
and of course Chopin, particularly the Sonatas and Ballades
Richter's performances are always pretty good to listen to.