Issues : Errors in FE

b. 38

composition: Op. 29, Impromptu in A♭ major

 
 
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In FE in the accord in the L.H. there is no natural next to d1 and an added note. Chopin corrected this mistake in all pupils' copies.

category imprint: Differences between sources

issues: Annotations in teaching copies , Errors in FE

b. 46-48

composition: Op. 29, Impromptu in A♭ major

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We give the slur of A (→GE). FE and EE are totally lacking the slur, which can be considered as an obvious oversight.

category imprint: Differences between sources

issues: Errors in FE , Errors in EE

b. 48

composition: Op. 29, Impromptu in A♭ major

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In the chord there is no natural next to b in FE. The error was corrected in all pupils' copies.

category imprint: Differences between sources

issues: Annotations in teaching copies , Errors in FE

b. 52-56

composition: Op. 29, Impromptu in A♭ major

 
 
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The slurs in FE are most probably erroneous, as in all similar places in this part of Impromptu, the phrases start with an upbeat. 

category imprint: Differences between sources

issues: Errors in FE

b. 63

composition: Op. 29, Impromptu in A♭ major

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FE is lacking the d flat on the 3rd crotchet in the L.H.

category imprint: Differences between sources

issues: Errors in FE