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b. 18

composition: WN 37, Lento con gran espressione

..

In A1 one can see that the two quavers on the 4th beat of the bar replaced the initial f1 crotchet.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections of AI

b. 21-24

composition: WN 37, Lento con gran espressione

..

None of the six necessary naturals lowering d2(1) to d2(1) are present in CJ and CK, which is a striking example of overlooked accidentals of a current key. This is even more of anomaly given that the first two R.H. naturals are written in A1. CB and EL contain the correct text.

category imprint: Interpretations within context; Differences between sources

issues: Omission of current key accidentals , Balakirev's revisions , Revisions in EL

b. 24

composition: WN 37, Lento con gran espressione

c1 in A1

e1 in CK (→CB) & EL

..

e1 in the version of CK (→CB) and EL must be Kolberg's mistake – in A1 one can see that the note was corrected from e1 to c1. The version with c1 is an unquestionable Chopinesque improvement – it alleviates the impression of A-e1 having been moved parallel to F-c1, which opens the next bar.

category imprint: Differences between sources; Source & stylistic information

issues: Corrections in A , Terzverschreibung error

b. 25

composition: WN 37, Lento con gran espressione

..

We add a cautionary  before d1 in the main text and in the substantive transcription of A1.

category imprint: Editorial revisions

b. 26

composition: WN 37, Lento con gran espressione

Original version in A1

Final version in A1, contextual interpretation

CJ & CK (→CB)

..

The initial version of A1 was corrected still in this autograph (inaccurately – the penultimate L.H. quaver, b, remained unchanged), whereas the sources based on [A2] already contain the changed version (regardless of the rhythmic changes). The version of EL may be Kolberg's revision after the analogy with b. 22. 

category imprint: Differences between sources; Corrections & alterations; Source & stylistic information

issues: Errors resulting from corrections , Errors of A , Corrections of AI , Kolberg's revisions , Revisions in EL