Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Pitch
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


Pitch

b. 78

composition: Op. 10 No 5, Etude in G♭ major

Octaves in A

Single D in FE (→GE,EE)

..

It is uncertain whether the octaves, written in A in an abbreviated form with the use of 8, were not simply overlooked in FE (→GE,EE). Stylistically, both versions seem to be equal. In the main text we give the version of the editions, as Chopin could have considered it as the correct one even if it had emerged accidentally (there are no entries in this place in any of the pupils' copies).

category imprint: Differences between sources

issues: Errors in FE , Authentic corrections of FE , Abbreviated octaves' notation

b. 83-84

composition: Op. 10 No 5, Etude in G♭ major

..

Initially, Chopin wrote the part of the L.H. in A one octave too high. He also committed a mistake at the time of writing the part of the R.H. – he overlooked the a1-a2 octave and noticed the error only when he was writing the fourth consecutive erroneous octave. After adding the correct notes, the erroneous ones remained not deleted, yet in spite of that the engraver correctly understood the notation and the text of FE (→GE,EE) is correct. 

category imprint: Corrections & alterations

issues: Corrections in A , Partial corrections