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b. 153

composition: Op. 50 No. 3, Mazurka in C♯ minor

No marking in AI, AF & EE

in FE & GE

..

The  indication was added in FE in the last stage of proofreading. Without [AG] it is difficult to say whether the same was true of GE or whether Chopin wrote it already in the aforementioned autograph.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE

b. 157-160

composition: Op. 50 No. 3, Mazurka in C♯ minor

No L.H. slurs in AI & AF (→FEEE)

Slurs in GE

..

The L.H. slurs are almost certainly an improvement introduced in [AG] (→GE). A similar situation can be found in b. 165-168.

category imprint: Differences between sources; Corrections & alterations

b. 158

composition: Op. 50 No. 3, Mazurka in C♯ minor

..

Both autographs are lacking in the  restoring e on the 3rd beat of the bar, which is a patent oversight. The accidental was added in FE (→EE), which could have been performed by the reviser. It is also present in GE, and the layout of the accidentals before this dyad in GE1 also points to the fact that the sign was added in print (cf. the correct layout in GE2). 

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , GE revisions , Errors of A , FE revisions

b. 158-161

composition: Op. 50 No. 3, Mazurka in C♯ minor

cresc. - - in bar 161 in AF (→FEEE)

cresc. - - in bar 158 in GE

..

In the main text we give the version of AF (→FEEE), in which a continuous cresc. begins only just in the second half of the eight-bar section. The version of GE, also undoubtedly authentic, can be considered an equal variant. A similar situation can be found in b. 166-169.

category imprint: Differences between sources; Corrections & alterations

b. 159

composition: Op. 50 No. 3, Mazurka in C♯ minor

Slurs in AI, possible interpretation of AF

Slurs in Af (literal reading→FEEE) & GE

Slurs suggested by the editors

..

In AF both the ending of the slur from the previous bars and the beginning of the new one are written inaccurately, hence it is unclear which notes they are supposed to concern. The ending of the former is similarly inaccurate in GE, which suggests that it was also [AG] that was not precise in this respect. We reproduce the text of both sources the way it was performed in FE (→EE), which seems to be closest to this notation. However, we are convinced that Chopin meant the slur to be divided after the 1st beat of the bar, as in AI or the way both AF and GE have it in analogous b. 167.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A