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b. 231

composition: Op. 23, Ballade in G minor

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In A there are no accidentals to the first L.H. octave, while the  lowering a to a is only just before the 2nd crotchet. Chopin's mistake is evidenced by the  before the bottom note of the last octave in this bar, which would be irrational if the 1st octave were supposed to be A-a (naturally, the mistake is also evidenced by the logic of the chromatic bass sequence). The mistake of A was carefully corrected by FE (→GE,EE) – flats were added to the 1st octave and the consequently superfluous accidental to a in the 2nd crotchet was removed.

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Errors of A , Authentic corrections of FE , Last key signature sign

b. 232

composition: Op. 23, Ballade in G minor

a2-f3 in A (→FEEE,GE1GE2GE3GE4)

a2-f3 in GE1a

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The version of GE1a with an a2-f3 sixth resulted from a routine revision based on the idea that diminished or augmented octaves generally come from oversights or mistakes.

category imprint: Differences between sources

issues: GE revisions

b. 233

composition: Op. 23, Ballade in G minor

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The  to the top note of the 1st sixth (f3), overlooked by A, was added by FE (→GE,EE). In the main text we add a cautionary  to a2.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , FE revisions , Inaccuracies in A

b. 233

composition: Op. 23, Ballade in G minor

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In A (→FE) this bar is at the end of a line; therefore, it should be marked that the clef is going to change to the bass one. A did not do it; however, a corresponding mark was added by FE.

category imprint: Differences between sources; Source & stylistic information

issues: FE revisions , Inaccuracies in A

b. 235

composition: Op. 23, Ballade in G minor

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The deletion visible in A next to the c-c1 octave most probably covers the initial version of this octave. According to us, it could have been d-d1.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A