I gotta say, bravo good sir. This is such a good song. It just sounds happy.
I could dance to this!
I liked the piano at the beginning quite a bit, and the chord progression was catchy. Some of the synths were annoying though, such as the ones right after the piano part. The only real problem I had was that it didn't have enough variety. Though you changed the instruments, the progression and melody was the same throughout. It would have been nice if every so often you broke off into some new chords or something.
Nice job over all! My little brother came into the room and said it made him want to dance, so you did something right. :P