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Pitch

b. 267

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

..

In A the flats were added in this bar in a visible haste, probably to complement the notation after the notes had been written. The signs before C and c are written a third too high, whereas instead of the necessary flats before g and c2 Chopin wrote signs before e and e1. The inaccuracy was not noticed in GE1 (→FE). The necessary signs were added only in EE and GE2, whereas the superfluous flats before e and e1 were removed only in EE

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Cautionary accidentals , Errors of A

b. 267

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

..

In FE1, the topmost note in this bar is an a1. This patent mistake was corrected in FE2, perhaps by Chopin. It is noteworthy that, in spite of the correction of the pitch, a necessary in this situation flat lowering c2 to cwas not added.

category imprint: Interpretations within context; Differences between sources

issues: Errors in FE , Terzverschreibung error , Authentic corrections of FE

b. 268

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

..

In A there is no  lowering g2 to g2. The sign was added already in GE1 (→FEEE, →GE2).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves

b. 272

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

..

In A Chopin wrote in the part of the R.H. the text of the next bar by mistake. Having noticed the error, he crossed out the bar and wrote the correct text on an adjacent stave.

category imprint: Source & stylistic information

issues: Corrections in A

b. 281

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

..

In FE the 1st note was printed at the right pitch, yet without a ledger line.

category imprint: Source & stylistic information

issues: Inaccuracies in FE