Like all of Chopin's other études, this work is in ABA form though the B section does not represent a contrasting and independent middle section in the manner of a trio. The entire piece is based on the same semiquaver motif, which springs from its opening strong sforzato accent to rapidly increase its volume and compass until ending abruptly on a strong sforzato climax. Musicologist Hugo Leichtentritt (1874–1951) presents a graphic curve which illustrates the aggressive character of the motive expanding from second to eleventh in less than three bars.