Throw down soundtrack???

Does anyone know if there is a soundtrack from this movie available for purchase? It's driving me nuts, there's two pieces that I want. It's not the "actual" singing done by Anita Mui or the japanese song sung by the character Jing.

1st piece: The music starts playing after Mona has stolen the money from the gambling den. It's the music that plays throughout the chase scene between Mona, Szeto Bo and the gambling den's thugs. You hear a shortened version of this song again when Mona runs away from her father towards the end of the movie.

2nd piece: A woman hums a melody in the background during the scene where Mona boards the bus, which has Szeto Bo aboard as well. Mona just failed with an agent to get to Japan. She boards the bus and breaks down and cry in front of Szeto Bo (well not in front per say, but in the seat behind him).

Any information on the name of the song/melodies, where it can be downloaded, or if there is a soundtrack available to be brought, etc., would be appreciated.