After leaving the MAT in 1902, wanting to break free of the highly naturalistic 'missing fourth wall' productions of Stanislavsky and Nemirovich-Danchenko, Meyerhold participated in a number of theatrical projects, as both a director and actor. Each project was an arena for experiment and creation of new staging methods. Meyerhold was one of the most fervent advocates of Symbolism in theatre, especially when he worked as the chief producer of the Vera Komissarzhevskaya theatre in 1906–1907. He was invited back to the MAT around this time to pursue his experimental ideas.