Lovely!
This should be adventure game music for sure. It's the sort of energetic and emotive piece that the Dark Cloud games were missing. I especially like the kinetic string stabs, though I think the pizzicato arpeggios are a little bit forward and may sound better on a piano or harp even.
I thought that this could have used more dynamic variation before that amusing and smoothly initiated change at around 3m19s. The levels of individual instruments were fluctuating a fair amount but I felt that the overall level of the piece stayed in the same region.
Speaking of that change... Makes this feel a lot like ending credits music hehe.
Very well done :D