This is a Korean anime, Wonderful Days, released in 2003. Amazing graphics and nice story. Here's the plot summary: In the future, after the human civilization ended by war and pollution, only those few people who had the power and technology escaped the disaster. Those people built the last human city of Ecoban. As its energy source is the pollutant, the people of Ecoban plan to destroy the inhabitants of Marr to get more pollutant. Standing against Ecoban is a young man who wants only to clear the skies of the clouds to show the wonderful heavens to the girl he loves.
Now here's the lyrics for the song that you are listening to, also from Wonderful Days. It's also has a Korean version, but sang by a female. Still worth listening to. Since the darn imeem player only plays a 30s preview for the song, i'm putting a version of the song here and a preview made by fans.
"A Prayer"
The soul of a child
Embraces the lights inside
What he’s looking for
Is the flowers above the wall
The boy’s tried to touch
It was high so much
He started sing a song
For the blossoms may have gone.
Let the rain fall down on me
I’d devote my leaves for thee
Singing of a child make’em to cry
The tears of the clouds fall.
The Prayer
A preview(looks like the whole movie though)
~Andromeda