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b. 66-89

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

..

As before, in the manuscripts and in GE various abbreviations of notation were often used.
In A (→FCGE) Chopin wrote down the majority of the groups of repeated quavers as dotted crotchets or minims provided with quaver tremolos. Such a notation is to be found in A (→FC) in b. 66 (L.H. only), 67-70, 72, 74 (L.H. only), 75-83 and in the L.H. only in b. 85 and 88-89. In addition, in FC there is a tremolo in b. 71. In GE all tremolos of FC were repeated except b. 88-89. Apart from tremolos, Chopin used in A (→FC) also / signs to mark b. 87 as a repetition of the previous one.
FCI used only / signs to mark repeating 3-quaver groups. It can be seen in b. 66, 74 and 89 and in the L.H. only in b. 72, 80 and 88. / signs were used to mark b. 85 and 87.

category imprint: Source & stylistic information

issues: Abbreviated notation of A

b. 67-68

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

 in A (→FCGE)

    in FE (→EE)

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The lack of two pedal changes is arguably a mistake by the engraver of FE (→EE).

category imprint: Differences between sources

issues: Errors in FE

b. 68-77

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

..

In FCI there is no d1 seventh in the chords in the 1st halves of b. 68 and 76 as well as in the 2nd half of b. 77.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

b. 69-73

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

..

In a few places FCI differs from the final version in the density of chords:

  • in b. 69 e1 notes are present in all chords (either in the right or the left hand),
  • in b. 73 the L.H. chords include an additional b note.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes

b. 70

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

..

In the 1st half of the bar, there is no g1 seventh in the chords in FCI, while a1 is played with the L.H. Cf. b. 68-77.

category imprint: Differences between sources; Corrections & alterations

issues: Accompaniment changes