As @user1079505 points out, recorded versions of the piece include an E#. This begs the question, though: how do they know to play E#?
One way would be a more modern edition that contains the correction. But that still begs the question of how the editor(s) knew.
How does an editor or performer know that E#
is correct?
The holograph manuscript
Gottschalk's original, handwritten manuscript is held by the New York Public Library (WorldCat). In principle, a researcher could consult the original to see if Gottschalk wrote an E#
, with the error being introduced in the process of publishing the first edition. Unfortunately, the NYPL only has the first page of the manuscript, which does not contain measure 39.1
The musical evidence
However, even without access to the holograph, examining the published edition (presuming the remainder is correct) gives clues supporting E#
.
The B section's defining musical gesture is Db-Eb-F Gb-F-Gb
:
X: 1
T: Manchega
T: B section motif
C: Louis Moreau Gottschalk
K: Gb
D'E'F' {/A'}G'F'/2G'/2 z
This gesture occurs four times, in measures 33, 35, 37, and 39.
Measures 33, 35, and 37 all contain exactly these same pitches. In measure 39, beat 4 is re-notated from Gb
to F#
, because the underlying harmony is D major
. (This serves as a pivot chord. It's the vi
chord borrowed from Gb minor
[i.e., Ebb major] and also the iv
chord of A major
[i.e., D major], where the music arrives on measure 40, beats 5 and 6.)
Given the melodic consistency and harmonic context, there is no reason the F#
would be decorated with Eb
, which is musically jarring at least, if not altogether nonsensical. E#
maintains (enharmonic) consistency with the preceding three occurrences, which contain F
.
Further, the D#
in the same chord makes little sense for the same reason (consistency with the other occurrences of the gesture) as well as the presence of D
in the left hand.
Even more reliably than the autograph, this makes clear Gottschalk's intention that the Eb
should be E#
(and the D#
should be D
).
1 That only the first page is in the collection (call #: JPB 84-13 no. 31 [Score]) was confirmed in email communication with the library on 22 Sept 2021. The only other edition held by the NYPL is the William Hall & Son edition, which does contain the error. That edition is available on IMSLP.