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b. 57

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

..

We add a cautionary  before c3.

category imprint: Editorial revisions

b. 58

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

..

FEJ has octave signs (8)​ written and crossed out under the1st and the 7th quaver. Those signs were probably mistakenly written one bar too early. 

category imprint: Corrections & alterations; Source & stylistic information

issues: Annotations in teaching copies , Annotations in FEJ

b. 59-60

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

No octaves in  A (→GEFEEE)

Two octaves in FED and FEJ

Three octaves in FES

The editors' variant proposal

..

In the three teaching copies, the bass notes in  bar 59 were doubled with lower octaves. In FES the octave progression is consistently brought to the beginning of bar 60. In our opinion this means that Chopin considered the version with the octaves at least equivalent to the version of A (→GEFEEE), in which single notes appear.

category imprint: Differences between sources; Corrections & alterations

issues: Annotations in teaching copies , Annotations in FED , Annotations in FES , Authentic post-publication changes and variants , Annotations in FEJ , Bass register changes , Abbreviated octaves' notation

b. 59

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

d flat in A (→GE2) and FE (→EE)

in GE1

..

The note in GE1 is certainly erroneous: this is evidenced by the proofing - probably Chopin's - of FE, in which the d flat written in A was reinstated. The error was also corrected in GE2.

category imprint: Differences between sources

issues: Errors in GE , Terzverschreibung error , Authentic corrections of FE

b. 60

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

A flat1 in A (→GEFE) and EE3

in EE1

..

As the first note EE1 has C. The mistake was corrected in EE3.

category imprint: Differences between sources

issues: Errors in EE