Research into radio trailers.

Research Into Radio Trailers.

In the video shown above there are four examples of a modern radio trailer advertising a feature length film available to see or soon to be available in cinemas. In a way they all have the same formula of how they are written and structure of narration; All of the following radio trailers contain narration mentioning their awards (eg 'Gravity', the advert is filled with mentions of things like nominations and awards.) Gravity also tells us that there is more than one way, visually, to see the film. The trailer also mentions to availability of IMAX and 3D, which hypes up the visual experience. whereas other trailers such as 'The Conjuring' rely heavily on the emphasis of genre, and how 'scar' or 'terrifying' the film is, quite rightly so as it is a horror film. 

Another example being 'The Great Gatsby'; This radio trailer relies mostly on the names of the musicians involved in the film. Being that the film is based around parties and celebration, so music plays a big part in the film, an if most if not all of the music in the film is performed by big named musicians then thats a great selling point (pull factor).
Conclusively, all of these trailers focus on their own strongpoints; whether it be awards, music, genre or just hype, they all show their own strength in order to persuade you to pay and see the film. None of these trailers leave tied ends either, they all seem to be loosely described an leave cliffhangers in order to leave confusion onto what is going on, and because it is a radio trailer, there is no visual aspect so something small in the film may sound big and important on the radio, but because you cant see what is happening in the trailer at that point, they can leave scenes open to your own interpretation.