Issues : Omission of current key accidentals

b. 462-463

composition: Op. 21, Concerto in F minor, Mvt III

e3 in A (literal reading→GEFE1)

e3 in A (contextual interpretation) & FE2

e3 & e3 in EE

..

Just like in bars 422-423, the flats lowering e3 to e3 and the cautionary  before e2 in the L.H. in bar 463 prove that the version of A (→GEFE1), interpreted literally, is erroneous. In EE, a respective  is only in bar 463 (together with a  before e2), which is probably a result of an oversight of the sign in bar 462. 

category imprint: Interpretations within context; Differences between sources

issues: Errors in EE , Cautionary accidentals , Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 476-477

composition: Op. 21, Concerto in F minor, Mvt III

..

In A, Chopin wrote only two naturals in this place – before the 2nd quaver in bar 476 and before the bottom note of the 1st quaver in bar 477. The missing signs before the 1st octave in the L.H. in bar 476 are the only case in the entire fragment in which the first occurrence of a note in a bar was not marked correctly. It probably indicates that the part of the L.H. was written after the passages in the R.H., hence the first b Chopin encountered while writing was the 2nd quaver, written on the bottom stave. Considering that the  is valid also for the topmost note in the L.H., all necessary naturals were added already in GE (→FEEE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , GE revisions , Omission of current key accidentals , Errors of A