Just fucking epic.
I've listened to it for about an hour, and I must say that I with such a sweet melody, it doesn't even need a bass. The piano itself can play the bass. I thought I was going to miss it, but it's not necessary. That's a fantastic composition you've made there!
The piano melody is soo freaking catchy, and is beautiful. It's an awesome progression there.
If I could rate your work a 1000, I would. Nice job, fellow.