(UPDATE - The attached file is the Rog transcription. I can't attach the correct one by Vierne, but just go to the Petrucci Library, and you'll find it. For some reason, I can't include the link, but it's easy to find. SORRY!)
Several days ago, ajongbloed uploaded a very fine performance of this piece, with the transcription having been done by Arno Rog.
At the time, PLRT commented that the work was transcribed by the great Louis Vierne, and performed by him in his recitals.
The transcription IS available, and I have attached the file below.
I certainly knew this exquisite work, but this is another one that I hadn't thought for many years, and I was delighted to have a chance to play this on the organ at Caen, since it seemed like the ideal organ to follow Vierne's directions for registrations, including the Clarinette of the Recit as the principal solo voice. It is titled in the French as: "Sicilienne de la Sonate en mi bémol pour flûte et clavecin, BWV 1031"
One interesting "historic" fact about the piece is that recently, "experts" believe that the work may not have been written by J.S. Bach, but by his son, Carl Philipp Emmanuel, instead, but that's another tale for another day!
In appreciation of his own fine performance, and for his solid and very positive presence on the Concert Hall, I dedicate my performance to ajongbloed.
THANK YOU! :-)