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b. 97-99

composition: (Op. 4), Sonata in C minor, Mvt IV

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In A there are no naturals to the 6th quaver in bar 97 (A) and the minim in the 2nd half of bar 99 (a). Both accidentals were added in GE (→FE,EE,IE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Omission of current key accidentals , Last key signature sign , Inaccuracies in A

b. 97

composition: (Op. 4), Sonata in C minor, Mvt IV

B-d1 in A (→#Wn→#Wf,#Ww) & EE2

B-b in EE1

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The version of EE1 with an octave as the last crotchet of the bar is certainly erroneous and has been corrected in EE2.

category imprint: Differences between sources

issues: EE revisions , Errors in EE , Terzverschreibung error

b. 98-99

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In the main text we add cautionary naturals to c1 in bar 98 and the first c in bar 99.

category imprint: Editorial revisions

b. 105

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A Chopin wrote a  raising a to a only just before the last chord in this bar. The mistake remained unnoticed in the majority of the editions – the necessary accidental to the 2nd crotchet was added only in FE. In the main text we include this addition and put the  to the 4th crotchet (unnecessary in this situation) at the pitch of c1 as a cautionary accidental.
In addition, all sources feature a  to a1 on the 6th R.H. quaver (unnecessarily repeated), which we omit in the main text.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: FE revisions , Errors repeated in GE , Errors repeated in EE , Errors repeated in IE

b. 105

composition: (Op. 4), Sonata in C minor, Mvt IV

d in chord in A (→GEFE,IE)

e in EE1

f in EE2

..

The EE1 version is erroneous, while the EE2 version – an arbitrary or mistaken revision thereof.

category imprint: Differences between sources

issues: EE revisions , Errors in EE , Terzverschreibung error