EE1 - First English edition
| Publisher: | Wessel & Co. |
| Date: | X 1837 |
| Title: | Douze Etudes || No. 15 |
| Dedication: | Made. la Comtesse d'Agoult |
EE1 is based on a lost manuscript, most probably [A] or – what is more likely – its copy. The manuscript, already after having been prepared, was entirely reviewed and corrected by Chopin, so even the versions that differ EE1 from the remaining editions may be authentic (e.g., the pedalling in bar 25, dim. in bar 27 or the missing 
signs in bar 38 and 40). In turn, nothing indicates a possibility of Chopin proofreading of EE1.
On the other hand, EE1 lacks certain elements of notation present in FE and GC (→GE), which may point out to an oversight of the engraver or copyist preparing the base text or omission of this base text at the time of changes and additions introduced by Chopin, e.g.:
-
flats at the beginning of bar 21 – cautionary before b
1 and lowering a1 to a1; -
in bar 43.
EE1 includes a clear mistake at the end of bar 4 – no return of the bass clef, as well as an erroneous note in bar 16 (a possible Chopin's mistake in [A]). Same as in some other sources, a few necessary accidentals are missing, as, for example, in bars 20-21 and 23.
Some minor additions are most probably an addition of the reviser: accidentals (in spite of deficiencies, EE1 is more accurate in this respect than GC and FE), as well as 
at the end of the piece. The vertical accents, with which some of the horizontal accents were replaced, are also an arbitrary decision (bars 29-31).
| Original in: | National Library of Scotland, Edynburg |
| Shelf-mark: | Mus. Vol. 268 (1) |