According to the testimony of several contemporaries, Wolfgang Amadeus Mozart was an excellent organist. Be that as it may, he composed only a few works for the "king of instruments." This is because organ compositions were intended for concrete occasions and only roughly sketched on paper. Some of these sketches and fragments were completed by pupils or friends after Mozart's death. The so-called flute clock, a kind of mechanical slot-machine with organ pipes, was a specialty of the classical period. Mozart wrote for this popular apparatus because he was well paid for it at the same time he complained of its limited sonic possibilities, also creating "genuine" organ pieces that could only be optimally realised on a large instrument. The Metzler organ used here (Hopfgarten, Tyrol) is, with its South German-influenced sound aesthetic and extensions in the Silbermann style, perfectly suited to these works.Martin Sander - prize winner at competitions such as the Prague Spring, Bach Competition in Leipzig, ARD and others - unites them to form a conclusive complete recording.