i know where to get the song from the trailer and movie
this song is incredible, it's a must listen to! the name is Vinaya-LEjourseleve
the song is available for free here:
http://travellingmusic.free.fr/IMG/mp3/Vinaya-Lejourseleve.mp3
this is also good:
http://travellingmusic.free.fr/IMG/mp3/Vinaya-Douxhiver.mp3