From 1910 to 1920 Ivo Raić has staged 52 operas and operettas written by Croatian and European composers. His views on modern theatre staging were first revealed in the overture and the second act of Vatroslav Lisinski’s opera Porin in 1910 when he used movements of the masses (choir) to emphasise the psychological differences between characters and their arias. Equally interesting is his staging of Blagoje Bersa’s opera Oganj (Fire) in 1911, which set the ground for Croatian music modernism and introduced Wagner’s notion of Gesamtkunstwerk on the Zagreb stage, as well as the composers veristic and even expressionistic views. The staging of Ivan Zajc’s opera Prvi grijeh (The Original Sin) in 1912, based on Silvije Strahimir Kranjčević’s bib...