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b. 5-6

composition: Op. 10 No 9, Etude in F minor

..

In bar 5 and in the 1st half of bar 6, in AI, instead of part of the L.H., there is come sopra, which, in this context, undoubtedly refers to bars 1-2 and means repetition of the notation of the first three groups of semiquavers.

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 5

composition: Op. 10 No 10, Etude in A♭ major

..

The hook at the bottom of the natural raising d3 to d3, resulting from haste while writing A, was initially interpreted in FE as a flat before f2. The mistake was then corrected. 

category imprint: Source & stylistic information

issues: Errors in FE , Authentic corrections of FE

b. 5-7

composition: Op. 10 No 10, Etude in A♭ major

Accents in A

FE (→EE)

GE1 (→GE2)

GE3 (→GE4)

..

In a proofreading of FE (→EE) Chopin reduced the number of accents in these bars, removing the accents at the beginning of the 1st and 3rd three-note groups of quavers. The change, together with a relevant correction of bars 1-4, homogenised the accentuation of the entire 1st eight-bar section of the Etude. In GE – probably due to an accumulation of mistakes – there are 4 accents in bar 6 and then only one in bars 5 and 7 (the accent in bar 5 was overlooked in GE3 and GE4). See also bar 8.

category imprint: Differences between sources

issues: Inaccuracies in FE , Authentic corrections of FE

b. 5-8

composition: Op. 10 No 10, Etude in A♭ major

..

In the 2nd four-bar section Chopin wrote the accidentals less carefully. In A (→FE) there are no naturals before b2 in bar 5 and d3 in bars 7-8. These patent oversights were corrected in GE and EE (in EE3 the  in bar 7 was not completed).

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , GE revisions , Errors of A

b. 5

composition: Op. 10 No 2, Etude in A minor

No indication in CLI, Ap & FE (→EE,GE1GE2GE3)

in GE4 (→GE5)

..

The  indication was added by the reviser of GE4 (→GE5). Similarly in bars 9 & 13.

category imprint: Differences between sources

issues: GE revisions