Bit strange for strangers
Ok, you need more then one kind of instruments to make classical music. I see that you dont have problem with talent, but I think that there is a lack of effort.
You need violins, drums, bass, And many more instruments with it. Take a look at Hamster-cake page. That is some good qualaty music! http://www.newgrounds.com/audio/liste n/402417 (one of my favorite)
Work on it. And you will learn new things.
O_O It's a duet, not an ensemble. But I've been working on some of those as well, they're just more modern than this one which is why I wanted to post it.
Thank you for the comment though!