Well Greek and Roman cultures exemplified plays and indeed still have some of the most revered plays to date, likely second only to Shakespeare. We also know that there was music played to accompany them, and I have little doubt that they would have understood the use of music to make the play.

Yet just like a silent film without a pianist, we'll never have a complete understanding of what was intended by the Greek and Roman play writes.

Anyone watched Psycho without music? It's crap.