I hope this makes sense..
Now, I have never reviewed a classical song. As much as I do enjoy the genre, I know absolutely nothing about it so think of this as a classical review coming from the mind of a trancer.
Now, there isn't much I can critique 'cause you mentioned it was unmastered so the best quality isn't expected (Not just yet anyway :P). I like the mood this song creates. Uplifting and melodic. Gives me the thought of someone trying to overcome great struggle in their life. So in the melody sense, it's great.
Uhm, I'm not sure what else to write in fear of sounding like an idiot so, great song, lol. Best of luck to your future stuff.