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b. 12

composition: Op. 64 No 3, Waltz in A♭ major

..

In A the tie sustaining a2 in bar 12, the first in a new line of the text, was left unfinished.

category imprint: Source & stylistic information

issues: Inaccuracies in A

b. 13-14

composition: Op. 64 No 3, Waltz in A♭ major

No pedal change in A

Pedal change in FE (→GE,EE)

..

An additional change of pedal at the transition between bars 13 and 14 is most probably a mistake of the engraver of FE (→GE,EE), perhaps caused by deletions in A. Similarly in all analogous places – bars 29-30 and 121-122, which may suggest a unifying revision, since the awkwardness of this pedalling is evident. 

category imprint: Differences between sources

issues: Errors in FE

b. 13-14

composition: Op. 64 No 3, Waltz in A♭ major

Slur in A, EEC & EEW2

No slur in FE (→GE,EEW1)

..

The missing slur over the dyads is most probably an oversight of the engraver of FE (→GE,EEW1). Same as in the case of the pedalling, the mistake could have been provoked by deletions in A, hindering the interpretation of the composer's intention.

category imprint: Differences between sources

issues: EE revisions , Errors in FE , Errors resulting from corrections

b. 13-14

composition: Op. 64 No 3, Waltz in A♭ major

..

In A one can see deletions in the part of the L.H. Chopin replaced a typical, dance accompaniment of the waltz with a two-bar progression of dyads, most probably in the version written in As.

category imprint: Differences between sources; Corrections & alterations

issues: Corrections in A

b. 13

composition: Op. 64 No 3, Waltz in A♭ major

..

GE1Ab has undoubtedly an erroneous b-boctave as the 3rd crotchet. 

category imprint: Differences between sources

issues: Errors in GE , Terzverschreibung error