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Verbal indications

b. 1

composition: Op. 25 No 1, Etude in A♭ major

sotto voce in AI

 in A (→GE), FE & EE

..

Preparing the Etude for print, Chopin decided to choose .

category imprint: Differences between sources; Corrections & alterations

b. 1

composition: Op. 25 No 1, Etude in A♭ major

Title in AI & CDP

Title & dedication in A

Title & dedication in GE1 (→GE1a)

Title & dedication in GE2 (→GE3)

Title & dedication in FE

Title & dedication in EE1 & EE3

Title in EE2

Our suggestion

..

In the main text we give the title and dedication in accordance with the title page of the entire opus in A (we develop the Mme and Csse abbreviations used in A) and FE. In A (→GE) and FE, the particular etudes are provided with an additional title, Etude, with a corresponding ordinal number, which we represent through the number preceding the score. In EE, the numbering includes 12 Etudes, Op. 10, hence this etude is No. 13.
In GE and EE, the title includes the number of etudes in the entire Op. 25, which could be related to the division of the entire opus into two books, 6 etudes each, performed in these editions. Nothing indicates that Chopin considered this information to be important, although in other opuses including groups of pieces (MazurkasNocturnesPolonaisesPreludesWaltzes), he would generally give the number of pieces.
EE2 omits the dedication, as the individual title page was replaced with a collective one, common for all Chopin pieces published by Wessel; in EE3, the dedication was added above the score on the 1st page.

category imprint: Differences between sources

issues: EE revisions , Dedications , GE revisions , Deletions in A

b. 1

composition: Op. 25 No 1, Etude in A♭ major

No indications in AI & CDP

in A (→GE), FE & EE

..

Chopin added the tempo indication, including the metronome tempo, only at the stage of preparing the Etude for publication – in #AW they are absent. In A one can see that the metronome tempo was added (in pencil) to the already finished manuscript.

In CDP, the entire first part of the manuscript (to bar 19) is devoid of any performance markings, which almost certainly does not reflect the state of the copied manuscript (probably autograph). Due to this fact, we do not include this source in the notes discussing the performance indications.

category imprint: Differences between sources

issues: Errors of CDP

b. 8

composition: Op. 25 No 1, Etude in A♭ major

No markings in AI & CDP

 in A (→GE), FE & EE

category imprint: Differences between sources; Corrections & alterations

b. 9

composition: Op. 25 No 1, Etude in A♭ major

No marking in AI, CDP & EE

in A (→GE) & FE

..

The missing  both in AI and EE is only one of numerous proofs for a less accurate elaboration of the Etude in these sources. 

In CDP there are no performance indications until bar 19, which is certainly a result of the copyist's inattention or his conscious decision, being a result of, e.g., hurry.

category imprint: Differences between sources; Corrections & alterations