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b. 7

composition: Op. 28 No. 9, Prelude in E major

F in A (→FC), literal reading

F in FE (→EE), GE & CGS

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When interpreted literally, the chord on the 3rd beat of the bar in A (→FC) consists of the following notes: F1-F-b-d1-f1, which, in turn, results in a G major chord (F major), which could be a part of this harmonic sequence. However, Chopin would generally avoid such an unnatural orthography; therefore, he most probably overlooked here the naturals lowering all f notes to f. They were added both in FE (→EE) and GE, and the composer did not question the printed naturals in any of the three teaching copies containing annotations coming from him.

category imprint: Interpretations within context; Differences between sources

issues: GE revisions , Omission of current key accidentals , Errors of A , FE revisions

b. 7

composition: Op. 28 No. 9, Prelude in E major

..

All sources feature a  (cautionary?) before e1. In the main text we omit that unjustified accidental.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals

b. 7

composition: Op. 28 No. 9, Prelude in E major

..

Due to the division of the bar between the lines adopted in our transcription, we repeat the  before b in the 2nd half of the bar, which is not necessary in an undivided bar and which, therefore, is absent in the sources. That procedure does not influence the interpretation of the text, and we reproduce the literal notation of the sources in the graphical transcription.

category imprint: Editorial revisions

b. 8

composition: Op. 28 No. 9, Prelude in E major

..

In the main text we add a cautionary  before B.

category imprint: Editorial revisions

b. 8

composition: Op. 28 No. 9, Prelude in E major

..

In A (→FC,FEEE1) and CGS there is no  lowering b to b. Chopin's mistake, obvious in this context, was corrected in GE and EE2. The fact that Chopin was convinced of the presence of b in the preceding part of the bar is evidenced by the naturals written in A before B1 and b on the 4th beat of the bar. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , GE revisions , Omission of current key accidentals , Errors of A , Errors repeated in FE , Errors repeated in EE