When producers look through their music library they need to have an instant access to what they need,and it is all put into a database under categories.
So apart from the title of the track it needs to be broken down into instrumentation,BPM,mood etc:
Title "In or out",
Mood Tension, Suspense
It is sent in the form of labelled cd's(with a spine),which should clearly show the genre.
Because when the producer needs Rock,thats the first thing he looks for.