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b. 16

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

..

The tight spacing in GE seems to be the reason for increasing inaccuracies in the extent of the hairpins  in FE and EE. In the latter, the sign has the form of an inverted accent. 

category imprint: Differences between sources

issues: Inaccuracies in FE , EE inaccuracies

b. 16

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

No slurs in A (→GEFE)

Slurs added in EE

..

In EE, this bar opens a new page. The addition of slurs in the left hand was probably meant to remind the performer about the authentic markings given in bar 1 as a model for the entire Nocturne.

category imprint: Differences between sources

issues: EE revisions

b. 16

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

The rhythm of A (→GEFEEE)

Possible interpretation of the notation of FES

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The meaning of the line drawn in FES linking the 6th third a flat2-c flat3 with the 3rd semiquaver of the left hand is unclear. Similar signs are most often employed to show the correct synchronization of both hands, yet in this case this would be a considerable alteration of the rhythm, not merely a more detailed explanation.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , Synchronization markings , Annotations in FES , Authentic post-publication changes and variants

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)

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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 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