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b. 20-22

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

..

In the main text we add cautionary flats before b2 in bar 20, d1 in bar 21 and e1(2) in bar 22. In turn, we remove the  before d2 in bar 22, written by Chopin yet unnecessary in this place.

category imprint: Editorial revisions

issues: Cautionary accidentals , Last key signature sign

b. 26

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

 in A

  in GE (→FEEE)

..

Same as in bar 12, the missing  sign in A is most probably an inaccuracy. The sign was added already in GE (→FEEE), perhaps at Chopin's request.

category imprint: Differences between sources

issues: Authentic corrections of GE , No pedal release mark

b. 27

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

Synchronization sign written into FED

No teaching indication

..

The synchronisation sign, ordering playing the first grace note with the bass simultaneously, is present in FED.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED , Synchronization markings

b. 27

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

..

Rhythmic notation used by Chopin can be understood in two ways:
      or  .
In practice the most important is a smooth rendition of thematic bottom voice. Similarly in bar 334.

category imprint: Interpretations within context; Source & stylistic information

b. 29-31

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

3-note slurs in A & GE2

4- & 5-note slurs in GE1

5-note slurs in FE (→EE)

..

The range of the slurs of the R.H. in A is beyond doubt, although none of them transcends the bar line (cf. the slurs in the L.H., written more accurately). The slurs of GE1 surprise with their inaccuracy, and the ones of FE (→EE) even more. The notation of A was interpreted correctly only in GE2.

category imprint: Differences between sources

issues: Errors in FE , Inaccuracies in GE , GE revisions , Errors repeated in EE