Issues : Errors in CGS

b. 1-4

composition: Op. 28 No. 9, Prelude in E major

Slurs in A (→FCGE, →FEEE)

No slurs in CGS

..

In CGS there are no L.H. slurs in these bars (nor in the next ones, until b. 9). See b. 5-12.

category imprint: Differences between sources

issues: Errors in CGS

b. 1

composition: Op. 28 No. 20, Prelude in C minor

 in A (→FCGE, →FEEE), AB & CGS

in ACh

No marking in CGS

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The  indication in ACh suggests a slightly different concept of the Prelude, less heroic and dramatic. It is not the only change with respect to the version of A – the cresc. in the last phrase starts in ACh one and a half bar earlier.
The missing indication in CGS must be an oversight – the copyist also forgot to write the time signature on the bottom stave. 

category imprint: Differences between sources

issues: Errors in CGS

b. 4

composition: Op. 28 No. 9, Prelude in E major

B in A (→FCGE, →FEEE)

c in CGS

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The version of CGS must be a mistake of the copyist. Cf. a similar mistake of the engraver of GE1 in b. 2.

category imprint: Differences between sources

issues: Errors in CGS

b. 4

composition: Op. 28 No. 9, Prelude in E major

Staccato dots in A (→FCGE, →FEEE)

No marks in CGS

..

The missing staccato dots in CGS are most probably an oversight of the copyist – cf. b. 1-3.

category imprint: Differences between sources

issues: Errors in CGS

b. 5-15

composition: Op. 28 No. 7, Prelude in A major

..

There is not a single tie in CGS (b. 5-6, 8-9, 11, 15-16), which almost certainly results from an oversight.

category imprint: Differences between sources

issues: Errors in CGS