The concept behind this play begins from Michael Cragig-Martin’s 1973 art work An Oak Tree, which consists of a glass of water on a shelf, alongside a written text, through which the author asks the spectator to accept that they have transformed the physical substance in the glass of water into an oak tree. Thus, the spectator questions the nature of visible reality in performing arts. The theatre show is born and lives in the spectator’s mind, as the stage effort is nothing more than the agent that causes thoughts, emotions and sensations. The receiver’s imagination is the one connecting real and fictitious elements, putting them together in a coherent story.” Through Bobi Pricop’s project, Teatrul Tineretului invites the audience to experiment theatre in a surprising way. The novelty of An Oak Tree comes from the fact that the two actors in the show accept the challenge of seeing the text for the first time during the performance, in front of the audience. The guest actor will get on stage, together with the actor of Teatrul Tineretului, Mircea Postelnicu, not knowing anything about the play and not having seen the show previously.