3. Chopin's Nocturne in E Flat Major from this unit and his Prelude in E Minor from Part I (Elements) exhibit the technique of _
____, a "slight holding back or pressing forward of tempo" in which one note is given more time than the notated rhythm calls for and the next note is given less.
Chopin's first étude focuses on a rippling chord progression. The piece is composed in the same ternary (or A-B-A) form as most of his Op. 10 études, introducing two ideas before coming back to repeat the first.
