Issues : Inaccuracies in A

b. 44

composition: Op. 28 No. 19, Prelude in E♭ major

..

In the last R.H. triplet, A (→FC,FE) contains only the  lowering d3 to d3. In GE and EE, a  was added before the next quaver (d2), yet the overlooked  restoring g2 on the last quaver of the bar is absent in all sources.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves , Omissions to cancel alteration , GE revisions , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE

b. 53

composition: Op. 28 No. 19, Prelude in E♭ major

 in A

    in FC (→GE)

  in FE (→EE)

..

The change of pedal on the 3rd beat of the bar is an arbitrary addition of Fontana, who proofread FE1 in the absence of Chopin. He intervened due to the single  mark at the beginning of the bar left in A (which, in turn, must have resulted from corrections and crossings-out). Upon seeing a change of the bass note, Fontana complemented the markings in a standard, safe manner; however, he did not check the authentic pedalling in analogous b. 61. Interestingly, in FC he added only a  mark at the end of the bar.

category imprint: Interpretations within context; Differences between sources

issues: Errors resulting from corrections , FE revisions , No pedal release mark , Fontana's revisions , Inaccuracies in A