Sentence:  In all his miscalculations , Stravinsky made the fatal historical blunder of presuming that he could transform other composers ' inspirations - representing many <WSD>peoples</WSD> , time periods and styles - into his own music by warping the harmony , melody , or form , to verify his own experiments . 
Meaning of the word marked with <WSD> tags:  (plural) any group of human beings (men or women or children) collectively