Even though I never have seen what you made before, this was a work of bittersweet art. Plus, I bet if you and Leeni keep at this; you two will knock James and Hania Lee down a few pegs. Aside from that, I'll start the review...
In terms of art and animation, I like the color selection that was used throughout the video and the art style in general. However, this doesn't have much frame-by-frame, but I do recognize good tweening animation when I see it. Kudos for some clever gradient usage; sure there are assholes who hate flash gradients, but anybody who puts them to good use surely knows what they're doing. When it comes to sound, I really like that song Leeni made with its soothing melody and clever sample selection. Much better than what's being plugged on the music channels if I do say so. In terms of content, it may not be overly complex, but it doesn't need to be that way. Plus, the direction and pacing are excellent for what you have done for that song.
What I like about this:
-Nice animation, color selection, and style
-Great direction and pace
What I don't like:
-The song isn't everyone's cup of tea
Overall: Here's a nice ten for what you and Leeni have done.