Critique to Improve
I am not hating , by any means, as this is a good track. I just think your drums and the way you tracked this was not classical. The piano and drumset used are not, from a classical standpoint, correct for the genre. The strings needed more life, and you needed to layer it more.
First, get a good listen in on a philharmonic or small orchestra (dependent on whether you want to do small or large orchestral numbers) and track down sample packs or soundfonts for orchestral percussion. Then find a really good grand, baby grand, and rhodes piano set. The drumroll setup you're using on this track is closer kin to marching band rather than stage music.
The quality of the track, though, is right on. The mixdown is only a little light in the drum section as the strings drown it out a bit. Sorry this was so long, but I wanted to explain my review a bit in hopes you'll keep hitting up classical pieces, as I think diversity makes anyone's tracks better in the long run.