Music Score (Film), Video Game, Sound Design, all my sounds that I use in my music is designed. and Royalties free.
Some audio references is good to get for a better idea and to be more inspire to create music. "The direction" is the mood the client's needs,
the right mood (smooth or fast or relax music, with less or more orchestration) is really important to get the goal of what the music should be to touch the client.
Depending of course of the nature of the project the client would be invited to communicate his needs and sharing his ideas
What the Seller needs to start the work
Some audio references, to get a better idea and be more inspire and directed to get the mood of the client needs.
Sometime The client needs smooth or fast or relax music, with less or more orchestration, depending of course the project. That why a good searching about the audio references is a MOST for the creator tools.