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b. 314

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

..

In A there is no  lowering g1 to g1. The patent oversight was corrected in GE1 (→FEEE, →GE2).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 316

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

..

In GE1 (→FEEE) there is no cautionary  before at the beginning of the bar, added in A later with a foreign hand. In the main text we include this sign, facilitating the interpretation.

category imprint: Differences between sources; Editorial revisions

issues: GE revisions , Foreign hand additions in manuscripts

b. 319-320

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

..

Same as in analogous bars 169-170, in A (→GE) there are no flats restoring a at the beginning of the 2nd half of each bar. The mistake was corrected in FE (→EE), probably at Chopin's request.

category imprint: Interpretations within context; Differences between sources

issues: Omissions to cancel alteration , Errors in GE , Errors of A , Authentic corrections of FE

b. 321

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

..

In A (→GE) there are no accidentals in the last group of semiquavers. In the proofreading of FE (→EE) two flats were added, probably indicated by Chopin, a cautionary before A and a necessary one before G.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Errors in GE , Cautionary accidentals , Authentic corrections of FE , Inaccuracies in A

b. 322-324

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

..

Three flats before g notes visible in A, written later with a foreign hand, were not included in GE1. The same applies to the cautionary  before at the beginning of bar 324. The natural harmonic context allows to guess the correct text even without these signs; however, all doubts are dissipated by the Chopin proofreading of FE (→EE), in which all necessary flats in bar 322 were added as well as a cautionary  before A at the end of bar 323 and E at the end of bar 324. GE2 included the signs added in A, adding also a fourth one, a necessary  in bar 322 (before the penultimate semiquaver).

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Foreign hand additions in manuscripts , Authentic corrections of FE