Sentence:  Because of the authentic homogeneity of his early Nationalistic <WSD>materials</WSD> , 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:  information (data or ideas or observations) that can be used or reworked into a finished form