What's that song in the Lovely Bones where Susie is walking home from school and she drops that note?

it's driving me crazy!!!What's that song in the Lovely Bones where Susie is walking home from school and she drops that note?
i've been looking everywhere,but i don't think they put out a soundtrack for the movie.so i looked at the credits(which last over 10 minutes)and i went to frostwire and downloaded those i could find. i know its by brian eno.the main choice i think is first light.second choice is ambient 1-music for airports.third choice is an ending(ascent).hope it helps you out