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Rhythm

b. 13

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

..

A has here visible traces of corrections: change of notation into two-part one and division of beams for a clearer presentation of the rhythmic structure.

category imprint: Interpretations within context; Corrections & alterations

issues: Corrections in A

b. 13

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

..

W FE, the last semiquaver of the left hand is erroneously written under the last demisemiquaver of the right hand. The line added in FEJ indicates the correct synchronisation of both hands.

category imprint: Source & stylistic information

issues: Annotations in teaching copies , Synchronization markings , Annotations in FEJ

b. 13

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

A clarifying brace in FED

Notation without a brace

..

In FED Chopin added a brace facilitating the correct reading of the notes a flat2 and a2 as an augmented unison, and indicating the resulting need to perform them simultaneously. We take that into account, as the notation - rarely used - may be misleading for contemporary performers too.

category imprint: Editorial revisions

b. 14

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

..

The numeral marking the sextuplet is missing in FE (→EE1). This inaccuracy was corrected in EE3.

category imprint: Differences between sources

issues: Inaccuracies in FE

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