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Slurs

b. 26

composition: Op. 12, Variations in B♭ major

Without slur or wedge in FE

Slur & staccato dot in GE

Slur & wedge in EE

..

In FE the second rhythmic group in the L.H. part is provided neither with a slur nor with a wedge, which is either the engraver's oversight or Chopin's inadvertence. The marks were added in GE and EE, yet in GE the wedge was changed to a staccato dot as part of general revision – see the note in bar 20.

category imprint: Differences between sources

issues: EE revisions , GE revisions

b. 30-31

composition: Op. 12, Variations in B♭ major

Slur in FE

No slur in GE & EE

..

It is highly unlikely that both GE and EE could have overlooked a clearly printed slur. Therefore, the slur was most probably added by Chopin in the last stage of proofreading FE.

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 32-33

composition: Op. 12, Variations in B♭ major

Slur from g1 in FE (literal reading→GE,EE)

Slur from f1 suggested by the editors

..

The FE slur was printed inaccurately – it clearly starts before the crotchet in bar 33, but not before the bar line, hence in GE and EE it does not include the upbeat. A comparison with the slur over the repetition of this phrase in bars 34-36 proves that this interpretation is wrong. Slurs starting from the upbeat appear also in the opera's original score, both in the orchestral introduction and the solo part.

category imprint: Editorial revisions

issues: Inaccuracies in FE

b. 37

composition: Op. 12, Variations in B♭ major

No slur in FE

Slur in GE & EE

Our variant suggestion

..

In this kind of texture, in which the parts of both hands move in parallel or at least in the same rhythm (as in bars 37-38), Chopin would often settle for a slur over the top voice; however, he would also use double slurs quite frequently (cf., e.g. the middle fragment of the Larghetto from the Concerto in F minor, Op. 21, in which only some phrases are provided with single slurs, e.g. from bar 57). Taking into account the possibility that we could be dealing here with authentic GE proofreading, in the main text we suggest a slur in brackets. The slur added in EE must be due to revision, often encountered in similar situations. 

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , Errors in FE , GE revisions , Authentic corrections of GE

b. 60

composition: Op. 12, Variations in B♭ major

No slur in FE

Slur in GE & EE

..

Taking into account the articulation markings in the parts of both hands in the preceding passage (staccato dots) and in the pair of chords ending the theme (slurs), we consider the absence of the L.H. slur in the discussed place to be a defect of notation (because of Chopin or the FE engraver). Therefore, in the main text we include the addition introduced by GE and EE.
See also bar 62.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions