Showcasing an Organ with JS Bach

With such a magnificent instrument like the great Rieger organ located in Saint Jakob's Church, Rothenburg ob der Tauber in Germany, how do you choose which registers to use? Simple: use all of them! During the "answers" (the start of the countersubject), mutations, reeds, and other colorful sounds literally pipe up in this lively, youthful fugue by the Baroque master, Johann Sebastian Bach (1685-1750).