Theatristry 

The art of doing REAL acting or performing in music or drama.

She has a degree in Theatristry as she performs a drama every month.

Theatristry by pablowisdom September 7, 2016

theatrist 

A casual term for someone involved in multiple aspects of theatre and live performance.

"Jane is a playwright, producer and actress, or 'theatrist' for short."

theatrist by johnsmithjones January 13, 2021