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b. 17

composition: Op. 27 No 2, Nocturne in D♭ major

..

Visible in A is the deletion of the tie sustaining the grace note f2.The change introduces a uniform performance of all the similar figures in bars 12, 16, 54 & 56.

category imprint: Corrections & alterations

issues: Corrections in A

b. 20

composition: Op. 27 No 2, Nocturne in D♭ major

..

In A Chopin forgot to repeat the tie sustaining a flat1 in the new system. This most probably caused an error in GE1, where that tie is missing. The error was corrected, probably by Chopin, in FE (→EE), it was also rectified in GE2.

category imprint: Interpretations within context; Differences between sources

issues: Errors in GE , Errors of A , Authentic corrections of FE

b. 20

composition: Op. 27 No 2, Nocturne in D♭ major

Prolongation of B double flat w FE (→EE)

No prolongation in  A (→GE)

..

Chopin's correction of FE.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

b. 21

composition: Op. 27 No 2, Nocturne in D♭ major

..

In FE the demisemiquaver beam for the last note of the bar is missing. The error was corrected in EE.

category imprint: Differences between sources

issues: EE revisions , Errors in FE

b. 27

composition: Op. 27 No 2, Nocturne in D♭ major

No tie sustaining a flat1 in A (→GEFE)

A tie in FED, FES and FEFr, and also in EE

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The ties written into FED, FES and FEFr point to Chopin’s probable mistake in A. In EE the tie was probably added by analogy with bars 3 and 47

category imprint: Differences between sources

issues: EE revisions , Errors of A