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Slurs

b. 1-4

composition: WN 37, Lento con gran espressione

3 slurs in A1

No slurs in CJ, CK (→CB) & EL

4 slurs suggested by the editors

..

The fact that in b. 3 an analogous slur to the first slur in b. 1 is missing is, according to us, an inaccuracy of A1 resulting from the working nature of this manuscript, prepared for private use. In turn, the absence of the slurs in [A2] (→CJ,CK) was probably a side effect of the abridged notation of b. 3-4 – upon seeing the slur over b. 1-2, which, formally, indicated only the need for them to be repeated, Chopin could have forgone writing additional slurs in order not to complicate the notation in the densely written autograph. Therefore, in the main text we give the slurs of A1 along with the slur in b. 3. We recommend using this addition also when choosing the text of A1

category imprint: Interpretations within context; Differences between sources; Editorial revisions

b. 5

composition: WN 37, Lento con gran espressione

No slurs in A1, CK & EL

Slurs in CJ & CB

..

The fact that the slurs are featured in CJ only makes us think that they could have been added by Chopin, who might have had the opportunity to go over this copy. However, it is an assumption only that actually does not influence the evaluation of authenticity of these slurs in any way.
The slurs in CB must be an arbitrary addition of the writer, who provided the L.H. part with slurs in the entire piece. 

category imprint: Differences between sources

issues: Balakirev's revisions

b. 5-6

composition: WN 37, Lento con gran espressione

Slur in A1, literal reading

Slur in CJ, literal reading

Slur in CK (→CB)

No slur in EL

..

In the main text we give the slur of CK (→CB), which is unquestionable in terms of image and music. According to us, it can also be considered an interpretation of the possibly inaccurate slurs of A1 and CJ. The slurring of A1 is generally rather of draft nature – careless and mostly short slurs appear only occasionally.
The absence of the slur in EL does not seem to be an oversight, since this edition is generally devoid of slurs and phrase marks – slurs that are not related to irregular groups are present only in b. 44 (arbitrary) and 47 (authentic). As a result, it could be regarded as a general editorial oversight.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A , Inaccuracies in JC , Revisions in EL

b. 7

composition: WN 37, Lento con gran espressione

Triplet slur in A1

Whole-bar slur in CJ

Half-bar slur in CK (probable interpretation→CB)

No slur in EL

..

The significant difference between the slurs of CJ and CK suggests that one of them is probably inaccurate (or both). In the main text we adopt the slur of CJ, which is a natural continuation of the slur in b. 5-6. In our interpretation, the slur of CK encompasses the entire 2nd half of the bar.

category imprint: Graphic ambiguousness; Differences between sources

issues: Inaccurate slurs in A

b. 9-10

composition: WN 37, Lento con gran espressione

Slur in CJ

Slurs in CK, literal reading

Slur in CB, contextual interpretation of slurs in CJ & CK

..

We interpret the slurs of CK as an attempt to combine the unnecessarily separated slurs. According to us, the beginnings of the slurs of CJ and CK are probably inaccurate, even if they are not that far from the notation of [A2]. We consider the slur of CB to be the accurate interpretation thereof and thus suggest it in the main text. The absence of the slurs in A1 and EL – see b. 5-7.

category imprint: Differences between sources; Editorial revisions

issues: Balakirev's revisions , Inaccuracies in CK