Issues : Omission of current key accidentals

b. 15

composition: Op. 25 No 7, Etude in C♯ minor

..

In GC and FE there is no  lowering c to c. This patent inaccuracy was corrected in GE and EE.

category imprint: Interpretations within context; Differences between sources

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

b. 39

composition: Op. 25 No 7, Etude in C♯ minor

..

In GC, FE and EE1 (→EE2) there is no  lowering c1 to c1, whereas in FE there is also no sign before in the L.H. The necessary signs were added in FES, GE and EE3.

category imprint: Interpretations within context; Differences between sources

issues: Annotations in teaching copies , EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , Annotations in FES