Cinema and the orchestra have had a long-standing relationship. Over the years the big screen has been almost as much about the accompanying music as the film. When someone like John Williams creates iconic, rousing, emotional, bombastic and beautifully crafted scores like Star Wars, Superman and Indiana Jones, it enraptures an audience.
In the late 60’s, through the 70’s, people began toying with synthesizers more and more to create sound scapes and scores. Other wordly, and more ambient and enveloping than emotionally manipulative. They lacked a certain refined quality that the Orchestral score would give you but that sound in its own way (and in the right film) worked. Mike Oldfield’s Tubular Bells as a companion piece to The Exorcist is supremely effective and iconic. Or Wendy Carlos and the score for The Shining.