Nice concept
I love the music and some of the animation is lovely to look at with some slow and touching elements.
The silhouettes were a nice idea - both add atmosphere and make it easier to animate... ;-)
Blue sky gradient is nicely made. Fireflies looked good (although seeing them 'turn on' multiple times seemed sloppy) and the reflections and ripples were really nice.
The bird flapping, though nicely animated, seemed slightly off in terms of perspective. The wings make it look as if we're seeing it from either below or above, whilst the head is in profile.
Whole thing seemed a bit too slow, and whilst that's no problem, suiting the song, there wasn't enough visual interest for my liking.
A play button should really be inserted so it doesn't auto-start when we're not yet ready.
But still, nice animation.
You have good taste in music. :)
Stay funky,
Bez