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b. 42

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

..

At the end of the bar, in the main text we add flats returning B1-B after B1-B in the piano reduction of the orchestral part. Chopin and the revisers of the editions may have considered them to be superfluous (after all, they are not necessary in the solo part, regarded separately). In two subsequent bars, such a kind of additions were introduced, however, in FE (→EE) in spite of no direct succession of different notes at the same pitch.

category imprint: Editorial revisions

b. 43-44

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

..

Cautionary flats before the B and b notes were added in a proofreading of FE (→EE) in both bars. However, in bar 43 the signs were put (certainly erroneous) only before the 8th demisemiquaver of the roulade.

category imprint: Differences between sources; Editorial revisions

issues: Cautionary accidentals , Authentic corrections of FE

b. 43-44

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

..

In FE, at the beginning of the line there is an erroneously placed treble clef (with a relevant set of key signatures). The patent mistake was corrected in EE.

category imprint: Differences between sources

issues: EE revisions , Errors in FE

b. 43

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

Octave A1-A in A (→GE) & EE

Sixth C-A in FE

..

FE has a C (with a ) as the bottom note of the semiquaver. It is either a revised Terzverschreibung error or a mistake resulting from similarity of the orchestral motifs in this and the previous bar (in GE1, being the base text to FE, both bars are printed next to each other, in one line). EE did not repeat this mistake (cf. the note on the clef).

category imprint: Differences between sources

issues: EE revisions , Errors in FE

b. 43

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

Crotchet d1-g1 with  in A (→GE)

No crotchet in FE (→EE)

Crotchet without  suggested by the editors

..

No d1-gfourth on the 4th beat of the bar is most probably a mistake (the dyad was either overlooked or left out due to an erroneous placement); in GE1 it was placed in such a way that on the upper stave the bar seems to have five crotchets.
In the main text we adhere to the notation of A, omitting only the unnecessary in this context cautionary  before g1.

category imprint: Differences between sources; Editorial revisions

issues: Errors in FE , Inaccuracies in GE , Cautionary accidentals