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b. 139-140

composition: Op. 24 No. 4, Mazurka in B♭ minor

sempre rallentando in A

GE (→FEEE)

..

In our main text we give sempre rallentando, just like Chopin wrote it in A. In GE (→FEEE) the word sempre was placed earlier, at the beginning of the bar, and rallentando was replaced with the abbreviation rallent.

category imprint: Differences between sources

issues: Inaccuracies in GE

b. 139-142

composition: Op. 24 No. 4, Mazurka in B♭ minor

A probable interpretation of the accents in A (→GEFEEE)

An alternative reading of the accents in  A

..

Considering their shape and location, the accents in bars 139 and 142 in A must be viewed as short ones, and this is how they were interpreted in GE (→FEEE). This is also consistent with Chopin's notation used in similar situations in bars 120, 122 and 134. However, the marks are big enough to stir some doubt; Chopin might have wanted to have long accents here after all, as accented notes are sustained longer (cf. also bar 146).

category imprint: Graphic ambiguousness

issues: Long accents

b. 142-143

composition: Op. 24 No. 4, Mazurka in B♭ minor

A tie in A (→GEFE) and EE3

No tie in EE1 (→EE2)

..

The tie linking the fminims was omitted from EE1 (→EE2). The mistake was corrected in EE3.

category imprint: Differences between sources

issues: Errors in EE

b. 143

composition: Op. 24 No. 4, Mazurka in B♭ minor

No marking in A (→GE)

 in FE

 and  in EE

..

Chopin added the marking  in the proofing of FE. In EE it was split into two separate parts, with  allocated to the bass note and  to the following chords, which in this case corresponds to the actual performance. 

category imprint: Differences between sources; Corrections & alterations

issues: EE revisions , Authentic corrections of FE

b. 144

composition: Op. 24 No. 4, Mazurka in B♭ minor

..

In A (→GE1FE) there are no naturals raising d flat-d flat1 to d-d1. This obvious omission on the part of Chopin was corrected in EE and GE2 (→GE3).

category imprint: Differences between sources

issues: Omission of current key accidentals , Errors of A