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b. 77-79

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

No pedalling in CLI

 in FE (→EE2)

  in GE & EE3 (→EE4)

..

In the main text we give the  sign visible in FE (→GE,EE) in bar 77. However, we do not include the  sign in bar 79, most probably added by revisers of GE and EE3 (→EE4). Leaving the end of a piece without the pedal release mark is quite often in Chopin's pieces and can offer some performance suggestions, cf., e.g., Etudes No. 7-9 or Nocturnes, Op. 27.  

category imprint: Differences between sources

issues: EE revisions , GE revisions , No pedal release mark

b. 77-79

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

in CLI

Octave in FE (→GE,EE

..

It is hard to definitely determine whether the lack of upper octaves in CLI is a result of the copyist's error or – which seems to be more plausible – the original version. 

category imprint: Differences between sources

issues: Accompaniment changes

b. 79

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

Pause in CLI

Pause in FE

Pauses in GE1 (→GE2) & GE4 (→GE5)

No signs in EE2 (→EE3)

Pause in GE3 & EE4

..

Apart from EE2 (→EE3), in which the fermata mark was undoubtedly overlooked, the notation of the remaining sources has the same meaning, yet in the case of FE, GE3 and EE4 the notation is certainly imprecise.

category imprint: Interpretations within context

issues: EE revisions , Inaccuracies in GE , Inaccuracies in FE , Errors in EE , GE revisions