The first thing I notice is the lack of low end in your music and it makes the piano in the beginning really really jarring. A double bass or a low cello would do nicely. It sounds like the high end of your instruments have been spiked up or they might just come like that. I would probably take around 1000 - 3000 hz down a bit for the beginning piano. As for the composition, the ending could've been a lot more fletched out. The rhythm the piano is playing is kind of nice! Your melody of the oboe could use some work to match the chords better. Other than that, keep up the good work!