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b. 14

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

e flat2-g flat2 in A, FE (→EE) and GE2

g flat2-b flat2 in GE1

..

 GE1 has mistakenly g flat2-b flat2as the 5th third of the sextupletChopin corrected that mistake when proofing GE (→EE), the correct text was also put in GE2.

category imprint: Differences between sources

issues: Errors in GE , Authentic corrections of FE

b. 15

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

..

We add a cautionary  before d flat3.

category imprint: Editorial revisions

issues: Cautionary accidentals

b. 15

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

 before the last but one semiquaver in A (→GE)

Three other naturals in FE

 removed before f2 in EE1

Corrected versions of FEFr and EE3

..

The edited text is the indisputable version of A (→GE); also EE3 and FEFr have the correct text. The version of FE (→EE1) is most probably erroneous – cf. analogous bar 55.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , Annotations in FEFr

b. 17

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

The last note B double flat  in FE (→EE)

The original e flat in A (→GE)

..

The first one of several corrections made by Chopin in the accompaniment in that movement of the Nocturne, introduced to FE. Cf. bars 19 and 25, as well as changes and additions in bars 18-22.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

b. 17

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

..

Visible in GE is the trace of correcting d double flat to BB.

category imprint: Source & stylistic information

issues: Terzverschreibung error