For me, playwriting is and has always been like making a chair. Your concerns are balance, form, timing, lights, space, music. If you don't have these essentials, you might as well be writing a theoretical essay, not a play.
Sam ShepardTo sing a song is quite different than to write a poem. I'm not and never will be a novelist, but to write a novel is not the same thing as writing a play. There is a difference in form, but essentially what you're after is the same thing.
Sam Shepard