Another possible incentive lies in the quality of sound. Voices could be assigned to certain channels, in turn assigned to certain speakers. An expert in room acoustics might be employed to arrange the speakers to create a sound much fuller than would be available from the average home stereo system. Still, it is questionable whether this would sell tickets. It is also questionable whether all the work that would go into such detailed sequencing would not be better spent rehearsing with musicians, or whether it might even not take longer to do.
Musicians are an easy solution to providing a spectacle.
This is a value often mentioned by music lovers. A pure music performance may be augmented by a short film or animation. The downside is that the creation of an animated film is an expensive and time-consuming investment. The other possibility is showing silent films against the music. Pure music could be coupled with dance.