Issues : Omission of current key accidentals

b. 16

composition: Op. 10 No 11, Etude in E♭ major

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In A there is no  lowering to g on the 5th quaver in the bar. The accidental was added in FE (→GE,EE).

category imprint: Differences between sources

issues: Omission of current key accidentals , Authentic corrections of FE

b. 16

composition: Op. 25 No 1, Etude in A♭ major

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In A, CDP, FE, and EE1, there is no  raising d2 to d2. This patent oversight was corrected in GE and EE2 (→EE3). AI also includes the correct notation.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in EE , GE revisions , Omission of current key accidentals , Errors of A

b. 16-17

composition: Op. 28 No. 3, Prelude in G major

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In FCI there are no naturals lowering f2 to f2 in these bars. It must be an inaccuracy of notation – see the comment on b. 18-22.

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals

b. 16

composition: Op. 2, Variation IV, primitive version

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Both manuscripts are missing a few necessary accidentals in this bar – a  to g2 and naturals to g2, d1 and g1. In addition, in AsI the  to d2 is missing. On the other hand, in A there is an unjustified  to c1 in the last L.H. figure. The latter and both accidentals written in A to the topmost R.H. notes are placed much lower than the noteheads they concern.

category imprint: Interpretations within context; Differences between sources; Source & stylistic information

issues: Accidentals in different octaves , Cautionary accidentals , Omission of current key accidentals , Accidental below/above the note , Inaccuracies in A

b. 17-18

composition: Op. 10 No 5, Etude in G♭ major

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The missing naturals raising c1 to c1 in A are a patent error by Chopin.

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