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Op. 10 No 1, Etude in C major

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b. 27

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

..

In CLI there is no cautionary  before f1.

category imprint: Source & stylistic information

issues: Cautionary accidentals

b. 29

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

b3 in CLI & EE

c4 in FE (→GE)
..

The b3 note on the last semiquaver in CLI and EE seems to be a mistake – the copyist, or maybe the engraver, could have not realised the irregularity of figurations in this place. However, one cannot exclude that CLI transfers the original version of the note, while in EE we are dealing with an editorial revision. Cf. bars 5 and 53.

category imprint: Differences between sources

issues: EE revisions , Accidentals in different octaves , Main-line changes

b. 30-37

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

..

Due to the lack of generally recognised rules concerning accidentals, the sources differ in this respect. However, the differences do not influence the interpretation of the text. The layout of the accidentals adopted in the main text can be found in GE4 (→GE5).

category imprint: Editorial revisions; Source & stylistic information

issues: EE revisions , Accidentals in different octaves , GE revisions

b. 33-34

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

Tied B in CLI

Tied octave (original version)

B1 & octave in FE (→GE,EE) 
..

CLI has a sustained B as a bass note in these bars. This is the original version, moreover, it was almost certainly written with an error – same as in the adjacent bars, it was the B1-B octave that was supposed to be in this place (cf. e.g. bars 3 or 23-24).

category imprint: Differences between sources

issues: Accompaniment changes , Errors of CLI

b. 35

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

No indication in CLI

 in FE (→GE,EE)

Our suggestion
..

In FE (→GE,EE) the  indication seems to be valid only from the semiquavers in the R.H. According to us, it is however highly unlikely for this indication not to include also the long resounding octave in the L.H. Therefore, we consider it as the notation's inaccuracy and in the main text we propose a relevant minor correction of the sign's placement. See also bar 45. 

category imprint: Interpretations within context; Differences between sources

issues: Centrally placed marks