You were referring to this link? [URL]http://www.ina.fr/art-et-culture/musique/video/SXF99002234/un-doyen-de-40-ans-le-festival-international-de-musique.fr.html[/URL] (Walcha's part starting around 02:30) Well, Walcha is (a.o.) known for his completion of the final fugue of [I]Die Kunst der Fuge[/I]. He picked the same Silbermann Organ in the Church of Saint-Pierre-le-Jeune (Strasbourg) to make a recording of it. IMHO though, the Alkmaar organ (Van Hagerbeer/F.C. Schnitger) is more suitable for this piece. Therefore I prefer Walcha's unfinished performance: [MEDIA=youtube]J0lk2dcHG-w[/MEDIA]