The purpose of this music is to complement, support and integrate the sales messaging of the mini-movie that is a film trailer.
Sometimes music from other successful films or hit songs is used as a subconscious tie-in method.
Trailer music is known for its sound-design driven and hybrid orchestral style.
Trailer music tracks can vary greatly in duration, depending on the theme and target of the album.
The music used in the trailer may be (or may have suggestive derivatives from): Developers often collaborate with composers or production companies to create original scores that reflect the game's atmosphere.