Étude Op. 25, No. 5 (Chopin)

Marking a serious departure in the expected technique developed previously, Chopin wrote this étude with a series of quick, dissonant minor seconds.

After the first theme of 'minor seconds' closes, Chopin introduces a Più Lento section in which a new melody (without dissonant minor seconds) is played in the parallel key, E major.

The final section of the piece starts with a recapitulation of the first theme, with climaxes in a coda played in E Major.

This idea appears only one other time in Chopin's set, in Étude Op.

Styling the études in this fashion further emphasizes Chopin's deviation from the standard set before him by composers such as Carl Czerny.