On this disc, featuring three different Silbermann organs, we have some major works, the Toccata, Adagio and Fugue and the "Great" Fantasia and Fugue for example, as well as some lighter works such as the Trio, the Aria and the Fugue in c. So we can demonstrate the richness and power of Silbermann's instruments, as well as the "silvery sounds" famous during Silbermann's time and commented upon so favorably by Mozart.
Particularly typical is the 16' Pedal Posaune found on all his organs, it gives a clear and definite bass, the "fondament" which Bach considered so important, without being overpowering – so different from the ubiquitous "Bourdon" which manages to boom without giving any clearly definable note. This comes out particularly well in the Chorale Variations BWV 725.
