The amount of GOBO choice?

A: as far as possible to play different GOBO, should be in the beam to render the whole scene, the stage atmosphere to easy to give a person close feeling. Of course used when appropriate GOBO, performances of GOBO should use and theme is relevant, it is to win resonance. In short, GOBO should be on the stage in the application of the bear is the role of the icing on the cake, and cannot become protagonist to go, that's easy to deviate from the subject.