6. However, there are some music videos which interlink with films, linking two industries together as they both promote each other. This is by having the music played in a film as non diegetic sound, which is used as mood music ( or creating a crescendo), this promotes the song as it works against each over, a good example of this is Trey Songz-Already taken . With this particular case, Step Up 3 is being promoted, containing dance scene’s connecting visuals of the film and the songs narrative throughout the majority of the music video.