Where the main elements of the song dictate the video – where we associate what we hear with what we see.

The dominant musical arrangement that dictates the overall mood. This could be a key guitar sound (the seven notes in ‘Smoke on the Water’ Deep Purple) or a particular beat (‘Weapon of Choice’ Fatboy Slim).

Once the director has identified what is the key vocal or musical element then this maybe used for intertextuality.
e.g. A xylophone sound being used in a nursery