シャルル＝ヴァランタン・アルカン
Scherzo diabolico ("Diabolical scherzo") is the third of the Études in the minor keys, Op. 39 for solo piano by the French composer Charles-Valentin Alkan. It is in G minor. The piece is in ternary form, beginning in G minor, and having a trio in G major. It shares many similarities with Chopin's B-flat minor scherzo, Op. 31.