Issues : Omission of current key accidentals

b. 30

composition: Op. 2, Variations, complete

g3 repeated in AsI, contextual interpretation

g3 tied in A (→GEFE,EE,FESB)

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According to the editors, the lack of a tie to g3 in #ApI may just be Chopin's oversight (the missing before this crotchet is definitely an error).

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals

b. 31

composition: Op. 28 No. 21, Prelude in B♭ major

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In A (→FE,FCGE1) there is no  lowering a2 to a2. The accidental was added in EE and GE2. In addition, EE1 overlooked the  lowering g2 to g2, which was corrected in EE2.

category imprint: Interpretations within context; Differences between sources

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

b. 31-63

composition: Op. 30 No. 2, Mazurka in B minor

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In FE there is no  raising e1 to e1 in bars 31 and 63. The oversight, probably by Chopin in [A], was corrected in EE.

category imprint: Interpretations within context; Differences between sources

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

b. 32

composition: WN 55, Waltz in F minor

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In AO, Chopin did not write a natural raising d to d, which is obvious in the harmonic context of this bar; we add it in our version. 

category imprint: Editorial revisions

issues: Omission of current key accidentals

b. 32

composition: Op. 26 No 2, Polonaise in E♭ minor

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Accidentals in A are to be found only before the first chord and a2-a3 on 5th quaver in R.H. All the necessary signs were added already in FE1, and repeated in the remaining editions (except for GE1 which overlooked  next to a3).

category imprint: Interpretations within context; Differences between sources

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