In response to this question: How does this production maintain the elements of an orginal Greek tragedy? Well it maintains many aspects of the original aspects that you would see way back when, on a Greek stage.
For one, they had a chorus that sung different parts of the story line and had some light dances moves that went along with the numbers. I knew that there was music in Greek theater but I was surprised when they actually started to sing and there was a clarinet (I believe it was a clarinet) accompanying the performers. I was impressed.
The costumes were up to par as well. The chorus had many actors that would suddenly turn their costumes inside-out, change their head wear and become a different character. However, there were females casted in the play. There were not only males, so masks with wigs were not necessarily needed. Also, every actor except for Oedipus wore not boots, but nude colored shoes that could help them interchange to a peasant of the chorus or their other character.
It was quite interesting to see how close they were to the orginal aspects of a true Greek theater in the modern age.