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b. 72

composition: Op. 12, Variations in B♭ major

d3 in FE

b2 in GE & EE

..

The version featuring b2 present in GE and EE was initially in FE as well, which is indicated by possible traces of corrections in print. It means that the change was performed in the last stage of proofreading – after the copies serving as the bases for GE and EE had been sent to the publishers in Leipzig and London. According to us, it is not the initial version but a Terzverschreibung mistake committed most probably by the engraver. 

category imprint: Differences between sources; Corrections & alterations

issues: Terzverschreibung error , Authentic corrections of FE

b. 72

composition: Op. 12, Variations in B♭ major

..

In the main text we add a cautionary  to e1 as it was also done in GE2.

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 73

composition: Op. 12, Variations in B♭ major

..

In FE (→GE) the bass clef is placed the same as in the main text – in the middle of the bar – yet, at the same time, the 2 bottom-most R.H. semiquavers, f and b, were written on the bottom stave, which would make them d2 and g2. The mistake was noticed and corrected only in EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , Errors repeated in GE

b. 73

composition: Op. 12, Variations in B♭ major

Wedges in FE

Staccato dots in GE

No markings in EE

..

The absence of marks in EE is most probably an oversight. On the other hand, the change of wedges to staccato dots in GE resulted from general revision of the publisher – see the note in bar 7.

category imprint: Differences between sources

issues: Errors in EE , GE revisions

b. 73

composition: Op. 12, Variations in B♭ major

No pedalling in FE (→GE,EE)

[ ] suggested by the editors

..

In the main text we suggest supplementing the pedalling after analogous bar 71.

category imprint: Editorial revisions