Issues : Accidentals in different octaves
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b. 1-4
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composition: Op. 28 No. 8, Prelude in F♯ minor
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In the figurations featuring the interval of an octave, Chopin would often be satisfied with an accidental placed only next to the first note constituting that interval (cf., e.g. the Etude in A category imprint: Interpretations within context; Differences between sources issues: EE revisions , Accidentals in different octaves , GE revisions , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE , Errors repeated in EE |
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b. 2
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composition: Op. 21, Concerto in F minor, Mvt II
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In A there is no category imprint: Interpretations within context; Differences between sources issues: Accidentals in different octaves , GE revisions , Inaccuracies in A |
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b. 2-6
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composition: Op. 2, Variation IV, primitive version
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In AsI there are no flats restoring b category imprint: Interpretations within context; Differences between sources issues: Accidentals in different octaves , Omissions to cancel alteration , Inaccuracies in A |
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b. 2-12
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composition: (Op. 4), Sonata in C minor, Mvt IV
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In the ascending passages in bar 2, 4, 10 and 12 Chopin entered accidentals into A only in the first half of each bar, considering them valid also later on in the bar, next to notes placed an octave or two octaves higher. All the necessary accidentals were added in GE (→FE,EE,IE). category imprint: Interpretations within context; Differences between sources issues: Accidentals in different octaves , GE revisions , Inaccuracies in A |
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b. 3-4
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composition: Op. 28 No. 8, Prelude in F♯ minor
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As was the case in the R.H. part, in A Chopin omits accidentals next to the quavers ending the four-note L.H. figures if they fall an octave lower than one of the preceding semiquavers. In the discussed bars, such a notation was repeated without changes in FC and FE1. Both necessary naturals – before g in b. 3 and f in b. 4 – were added in EE and GE2, whereas in the remaining editions only one natural was added, in GE1 in b. 3, while in FE2 in b. 4. category imprint: Interpretations within context; Differences between sources issues: EE revisions , Accidentals in different octaves , GE revisions , FE revisions , Inaccuracies in A , Errors repeated in GE , Errors repeated in FE |
Major, Op. 10 No. 10, b. 
Minor, such an extended validity of accidentals is a strictly observed rule – accidentals are absent even in the places where they are necessary to cancel the previous alteration (e.g. on the 2nd demisemiquaver on the 3rd beat of b. 4), while in 
before the top note of the octave. This patent inaccuracy was corrected in 
(b