Chungking Express - Wong Kar-Wai 1994)

Chungking Express (1994) uses diegetic music in an interesting way in this scene. As the music comes into the mix, it is used at a non-diegetic sound source allowing the scene to flow and creating an emotional response. However as the police officer enters the takeaway it becomes apparent that the music is diegetic. This has been done often but in reverse, there are a lot of films (usually Hollywood) where the music will start off as diegetic and become non-diegetic as the scene climaxes.  Another interesting point to make is that the music in the mix does not change, the levels or EQ aren't altered, the context of the scene makes the music diegetic, not the sound mix.

I plan to use a similar technique. I will be altering the MIDI track in my scene from non-diegetic to diegetic by using levels and the visuals as references. The visual references in my scene will be highlighted by the change of sound rather than the other way round.