Sentence:  Because of the <WSD>authentic</WSD> homogeneity of his early Nationalistic materials , and his flair for orchestrations - his brilliant Petruchka , his savage Sacre du Printemps , his incisive Les Noces - the world kept hoping that he could recapture the historical direction for which his native talents were predisposed . 
Meaning of the word marked with <WSD> tags:  conforming to fact and therefore worthy of belief