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b. 135

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

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GE4 added a cautionary  next to f2 in the R.H.

category imprint: Editorial revisions

issues: GE revisions

b. 135-136

composition: Op. 35, Sonata in B♭ minor, Mvt I

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GE1 overlooked the initial, falling on bar 135, fragment of the  hairpin. The mistake was corrected in GE2.

category imprint: Interpretations within context; Differences between sources; Source & stylistic information

issues: Errors in GE , GE revisions

b. 135

composition: Op. 21, Concerto in F minor, Mvt I

Crotchet b1 in A & GE2

Quaver b in GE1

Dotted quaver bin FE (→EE)

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Assigning the bcrotchet to the top voice, which made a quaver of it, is, according to us, a result of inaccuracy of the engraver of GE1 who either did not understand the notation of A or made his work easier. Adding an extending dot next to the note in FE (→EE) may be an ad hoc correction of an alleged oversight of the dot in the version of GE1. Therefore, in the main text we preserve the version of A as the only undoubtedly authentic. Theoretically, both in the case of the change in GE1 and FE, one cannot entirely exclude a possibility of Chopin's proofreading, yet it seems to be highly unlikely that he would like to change such a minor detail of accompaniment – the difference in the sound with a natural harmonic pedalling is practically imperceptible. GE2 returned the version of A. Similarly in an analogous place in the recapitulation, bar 283.

category imprint: Differences between sources

issues: Inaccuracies in GE , FE revisions

b. 135

composition: Op. 21, Concerto in F minor, Mvt I

Crotchet e in A (→GE)

Dotted minim in FE (→EE)

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Extending the value of e is undoubtedly a result of the Chopin proofreading of FE (→EE).

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

b. 135-136

composition: Op. 21, Concerto in F minor, Mvt I

Slur in A (possible reading→GEFE) & EE2 (→EE3)

No slur in EE1

Slur in A, reading suggested by the editors

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The range and placement of the slur in A are unclear. According to us, it may refer to the quavers in the top voice, as it was interpreted in the editions (except for EE1, in which the slur was overlooked) but also to the crotchet of the bottom voice, leading to the b minim in the next bar. Analysing also the notation of an analogous fragment of the recapitulation (bars 283-284) as well as a few other aspects of notation and structure of music, we decided to adopt the second possibility to the main text.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A