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b. 19-21

composition: (Op. 4), Sonata in C minor, Mvt II

Long accents in A

Short accents in GE (→FE,IE)

No marks in EE

..

GE (→FE,EE) considered the very characteristic long accents visible in A in bar 19 and 21 to be common, short accents. The absence of these marks in EE is most probably due to the engraver's mistake.

category imprint: Differences between sources

issues: Long accents , Inaccuracies in GE , Errors in EE

b. 20

composition: (Op. 4), Sonata in C minor, Mvt II

Short accent in A (literal reading→GEFE,EE,IE)

Long accent in A, contextual interpretation

..

The comparison with the A marks in analogous bar 18, 19 and 21 proves that the one in bar 20, although much shorter, is also to be interpreted as a long accent.

category imprint: Editorial revisions

issues: Long accents , Inaccuracies in A

b. 20

composition: (Op. 4), Sonata in C minor, Mvt II

No slurs in sources

Slurs suggested by the editors

..

In the context of three analogous bars, bar 18, 19 and 21, the missing slurs must be considered Chopin's inadvertence. Due to the above, we add them in the main text.

category imprint: Editorial revisions

b. 22

composition: (Op. 4), Sonata in C minor, Mvt II

Staccato dots in A

R.H. wedge in GE (→FE,EE,IE)

..

The dot in the L.H. part was most probably overlooked in GE (→FE,EE,IE), while the mark in the R.H. was adjusted to the wedges over the quavers ending the passages in this and the next bars.

category imprint: Differences between sources

issues: Inaccuracies in GE , Errors in GE , Wedges

b. 23

composition: (Op. 4), Sonata in C minor, Mvt II

 in A, literal reading

Long accent in A, contextual interpretation

No sign in GE (→FE,EE,IE)

..

Both the starting point of the mark in A, slightly before the A-a minim, and the fact that it intersects the minim's stem, clearly indicate that it is related to this minim and, consequently, that it is an accent. This is also supported by the correction visible in A – in the preceding bar Chopin removed the  hairpin under the L.H. part, which suggest a change of concept from a  following a  to an individual accent; at the same time, it explains its atypical length. Therefore, in the main text we reproduce the mark as a long accent. The literal interpretation can be considered an equal variant.
The absence of the mark in GE (→FE,EE,IE) is most probably the engraver's oversight.

category imprint: Graphic ambiguousness; Differences between sources

issues: Long accents , Errors in GE