Issues : Bass register changes

b. 37

composition: Op. 28 No. 17, Prelude in A♭ major

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The crossing-out of the D-d octave at the beginning of the bar, visible in A, suggests that moving the bass line in b. 37-40 an octave lower (with respect to the version of FCI) was an idea born in the process of writing A or fresh enough for Chopin to commit a mistake in the first of the lowered octaves. In A we can see a crossed-out  before the first d2 note in the R.H., which is an example of Chopin's uncertainty as to the key signature.

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Bass register changes , Last key signature sign

b. 37-38

composition: Op. 2, Variations, complete

cc-c1d-d1 & C-c1 in AsI, contextual interpretation

C-cC-cD-d & C-c in A (→GEEE,FESB)

C-cC-cd & c in FE

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The AsI version corresponds closely to the orchestra part. In the version prepared for printing, Chopin moved these bars an octave lower, presumably to preserve the ascending sequence of these orchestral interludes. While proofreading FE1 this fragment was modified once again by removing the octave doublings of two bass notes, D at the end of b. 37 and at the beginning of b. 38. We include this undoubtedly Chopin's correction in the main text.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FE , Bass register changes

b. 40

composition: Op. 28 No. 22, Prelude in G minor

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A , Accompaniment changes , Bass register changes

b. 45-46

composition: Op. 2, Variations, complete

D1-D & D-d octaves in AsI

D & d in A (→GEFE,EE,FESB)

category imprint: Differences between sources; Corrections & alterations

issues: Bass register changes

b. 49

composition: Op. 27 No 2, Nocturne in D♭ major

D flat in A (→GEFEEE)

An octave sign written into FED

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The sense and authenticity of this sign in FED is doubtless, yet due to the much more powerful and longer-sounding bass register of contemporary pianos this variant may only be used with utmost caution. 

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED , Authentic post-publication changes and variants , Bass register changes , Abbreviated octaves' notation