1.Dramaturgy is 'the art or technique of dramatic composition and theatrical representation.'
http://www.usq.edu.au/artsworx/schoolresources/fivewomen/dramaturgy
2. is the art of dramatic composition and the representation of the main elements of drama on the stage
http://en.wikipedia.org/wiki/Dramaturgy
3. Dramaturgy is a branch of the theatrical arts which involves bringing productions to life on the stage.
http://www.wisegeek.com/what-is-dramaturgy.htm
Gotthold Ephraim Lessing