Are you referring to BWV 933-938 6 Kleine Praludien? If so, I see no
such passage in any of the preludes.
What source are you engraving from?
I am a harpsichordist so I can fairly confidently say this is not a rare
notation and all it would mean is that the mordent is to the F sharp not
F natural.
Prelude 6 is full of these. The first edition - only published in 1802 -
is full of these, but with the sharp on top of the mordent, which is the
same.
From Wikipedia:
"In music, a mordent is an ornament indicating that the note is to be
played with a single rapid alternation with the note above or below.
Like trills, they can be chromatically modified by a small flat, sharp
or natural accidental."
Andrew
Kenneth Wolcott wrote on 28/06/2022 1:13 PM:
Hi;
I'm trying to engrave a Piano arrangement of JS Bach, Six Little
Preludes, Nr 1, where the left hand notes have a strange thing I've
never seen before, a mordent on top of a sharp sign.
