Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 422

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

..

In A (→GEFE) there is no  restoring gon the 3rd beat of this bar. This patent oversight – cf. analogous bar 414 – was corrected only in EE. An identical mistake is to be found in A also in the two remaining appearances of similar figures (bars 454 and 462). In this type of texture, Chopin considered both voices independently, to a significant extent, hence an alteration forming part of the chromatic progression in the top voice did not influence the notes of the bottom voice, constituting the harmonic base, in the internal hearing of the composer. Cf. numerous mistakes of this kind and inaccuracies in the Etude in A minor, op. 10 no. 2, e.g. in bars 1 and 5, as well as in an opposite situation in the 1st mov. of the Concerto, bars 302 and 304.

category imprint: Interpretations within context; Differences between sources

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

b. 422-423

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

e3 in A (literal reading→GE1FE1)

e3 in A (contextual interpretation), FE2 (→EE) & GE2

..

When interpreted literally, the version of A (→GE1FE1) is certainly erroneous, although both bars are written in the same way for the second time (bars 462-463). It is proved by the B-g-d1-fchord (and not -e1) in the orchestra, played from the beginning of bar 422, and above all by the flats lowering e3 to e3, which were added in both bars in the proofreading of FE2 (→EE), almost certainly by Chopin. Flats were added also in GE2.
See also bar 423.

category imprint: Differences between sources; Corrections & alterations

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

b. 423

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

..

In FE the 1st beat is written an octave lower and it was supposed to be encompassed with an octave sign, which, however, begins only from the 2nd beat of the bar. In EE1 the octave sign starts only from the next bar, which seems to be a result of a misunderstanding during an attempt to correct the mistake of FE. The subsequent EE already include the correct text, compliant with A (→GE).

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors in EE

b. 423

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

..

A does not have a  lowering d3 to dat the beginning of the bar. Chopin's patent oversight was corrected – perhaps by himself – already in GE1 (→FEEE, →GE2).

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Errors of A , Authentic corrections of GE

b. 423

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

..

The cautionary natural before ein the 1st chord in the L.H. was added – probably by Chopin – in the last phase of proofreading of FE2 (it is absent in other sources).

category imprint: Differences between sources

issues: Cautionary accidentals , Authentic corrections of FE