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b. 155

composition: Op. 35, Sonata in B♭ minor, Mvt I

e2-g2 in GC (→GE) & FE2 (→EE,FE3FE4)

g2-b2 in FE1

..

The characteristic, Terzverschreibung mistake of FE1 was corrected already in FE2.

category imprint: Differences between sources

issues: Errors in FE , Terzverschreibung error , FE revisions

b. 155

composition: Op. 35, Sonata in B♭ minor, Mvt I

..

There is no accidental before the top note of the 2nd quaver in GC and FE1 (→FE2FE3). The patent inaccuracy was corrected in the remaining sources.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Inaccuracies in FE , FE revisions , Inaccuracies in GC

b. 155-156

composition: Op. 64 No 2, Waltz in C♯ minor

c2 repeated in A (→FEEE,GE1no2,GE1opGE2opGE3op)

c2 tied in FED & GE2no2

..

The tie of c2, written in FED probably by Chopin, may be considered an authentic variant with respect to the repeated note present in all remaining sources (except for GE2no2). Similarly in bars 157-158. 

category imprint: Differences between sources; Corrections & alterations

issues: Annotations in teaching copies , Annotations in FED

b. 155

composition: Op. 21, Concerto in F minor, Mvt I

No marking in A (→GEFEEE)

in FED

suggested by the editors

..

The sign, added probably by Chopin in FED, is likely to be . In the main text we include the indication in the variant form.

category imprint: Differences between sources

issues: Annotations in teaching copies , Annotations in FED

b. 155

composition: Op. 21, Concerto in F minor, Mvt I

 in A & FE (→EE)

 in GE

..

The  sign, present in GE instead of  written in A, is a mistake, corrected then by Chopin in FE (→EE).

category imprint: Differences between sources

issues: Errors in GE , Authentic corrections of FE