Exceptions include Chopin 's Polonaise-Fantaisie in A-flat major , Op. 61 , which has a brief passage of about 6 bars actually notated in A-sharp major , inserting the necessary double-sharps as accidentals .
Exceptions include Chopin 's Polonaise-Fantaisie in A-flat major , Op. 61 , which has a short passage of about 6 bars actually written in A-sharp major , putting in the necessary double-sharps as accidentals .