Sentence:  In all his miscalculations , Stravinsky made the fatal historical blunder of presuming that he could transform other composers ' inspirations - representing many peoples , time periods and styles - into his own music by warping the <WSD>harmony</WSD> , melody , or form , to verify his own experiments . 
Meaning of the word marked with <WSD> tags:  the structure of music with respect to the composition and progression of chords