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b. 7

composition: WN 17, Polonaise in B♭ major

..

The sources differ in the notation of the first chord in the R.H.:

  • in JC, all three components are combined with one stem; such a kind of notation can often be found in Chopin sources, also in autographs. However, taking into consideration numerous errors and inaccuracies, JC cannot be considered as a fully reliable source in terms of the notation's details.
  • in EF there is a two-part notation: the minim a-e1 has a separate stem pointing downwards.
  • in PE the notation is unclear; probably it refers to a two-part notation in which the minim a-e1 has a stem pointing upwards. This is the interpretation we give in the main text.

category imprint: Differences between sources; Source & stylistic information

issues: Different values of chord components

b. 7-12

composition: Op. 10 No 1, Etude in C major

Ties in CLI, GE & EE

No ties in FE

..

In FE there are no ties sustaining the upper notes of the octaves in bars 7-8, 9-10 and 11-12. According to us, the most probable explanation is a kind of misunderstanding at the time of changing the original brief notation of the octaves with the use of under the upper notes for regular notation. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Abbreviated octaves' notation

b. 7

composition: Op. 10 No 1, Etude in C major

..

The cautionary  in front of is absent in CLI and GE1. The lack of the sign in GE1 suggests that the sign was added only in the last proofreading of FE, which is confirmed by visible traces of introducing changes.

category imprint: Differences between sources

issues: Cautionary accidentals

b. 7

composition: Op. 10 No 2, Etude in A minor

Crotchets in CLI & Ap

Quavers & rests in FE (→GE,EE

..

The alignment of the notation of the L.H. to the rhythm of the previous bars introduced in FEcor (→FEGE,EE) is an undeniable improvement.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes , Authentic corrections of FE

b. 7

composition: Op. 10 No 2, Etude in A minor

Sixth in CLI

Triad in ApFE (→GE,EE

..

The lack of e1 in CLI may be the original version or – which is much more probable – an error of the copyist (omissions of internal notes of the chords written on ledger lines were quite frequent at the time of reading Chopin's autographs).

category imprint: Differences between sources

issues: Uncertain notes on ledger lines