VI orchestral refers to the use of virtual instruments to emulate orchestral instruments. This is a technology that has developed greatly in the past two decades, and has matured recently with the advent of faster and more powerful computers. In many ways, the use of digital technology and audio sampling has made the process of creating music much less expensive and efficient for producers and directors, however it has sacrificed the warm and emotional aspects of the orchestra that can only be created with live performers.
It is extremely easy to get swept away with orchestral virtual instrumentation. The sound is so powerful and evocative that it is easy to lose track of what the music should be doing or how it should influence the listener. The possible combinations and sonic configurations are so extensive that it is easy to get lost. It is always interesting to imagine what classical composers of the past would have done with such rich tools.