Watch Online Movies HD Fmovies. Premiered in 1762, Orfeo ed Euridice is a turning point in the history of opera. Freeing the plot from the conventions of the 18th century opera seria, Gluck introduces fluidity to the drama. The rigid alternation of aria and recitativo is abandoned; continuity and unity are the cornerstones of Gluck's reform. The movement of Gluck’s music - with its lyrical intensity and the interweaving of chorus, solo singing and dance - appeals to theatre makers from all horizons.