This is absolutely amazing.
The violin is articulated masterfully. Not sure how easy the library is to work with, but this is almost flawless sounding. I checked the Youtube link to see if there's any live performer mentioned. I was surprised to see a Sample Library name drop instead.
And as usual, as it goes without saying, the piano is divine, with fluctuations in intensity and tempo that illuminate every drop of the song's dramatism. Beautiful playing and very touching composition.
This kind of track is what I've missed most about Newgrounds.