The Rite of Spring composer Julius Harrison acknowledged the uniqueness of the work negatively: it demonstrated Stravinsky's "abhorrence of everything for which music has stood these many centuries ... all human endeavour and progress are being swept aside to make room for hideous sounds ..." In "The Firebird", Stravinsky had begun to experiment with bitonality (the use of two different keys simultaneously). He took this technique further in "Petrushka", but reserved its full effect for "The Rite" where, as the analyst E.W. White explains, he "pushed [it] to its logical conclusion". White also observes the music's complex metrical character, with combinations of duple and
The Firebird leader. The lead role was fanced by Michel Denard. The Mariinsky Ballet performed the original choreography at Covent Garden in August 2011, as part of their Fokine retrospective. The National Ballet of Canada created a version of the "Firebird" for television, occasionally rebroadcast, in which special effects were used to make it appear that the Firebird is in flight. On 29 March 2012, the American Ballet Theatre premiered the ballet with choreography by Alexei Ratmansky at the Segerstrom Center for the Arts in Costa Mesa, California, starring Misty Copeland. The ballet centers on the journey of its hero, Prince Ivan.