The Studies in Canon Opus 45 date from 1845 and were composed when the composer was focused on developing contrapuntal discipline in his writing. The voice leading particularly in the two top lines of the organ solo is often quite difficult to follow and that is why the piano duet version arranged by Bizet and the two piano version arranged by Debussy are well worth exploring. Schumann was quite an insecure individual both in himself and in his abilities as a composer. The reason for this is both can be understood by knowing that in that his original ambition was to be a pianist and secondly that a very overbearing father-in-law. There is added significance in the observation that this scond movement Opus 56 movement is 56 bars long. Schumann had an obsession with puzzles particularly mathematical ones. When playing this music on the organ understand than it was composed for an instrument described as a pedal piano which had one keyboard which was often used as a practice instrument by organists. Unsurprisingly, in music composed for this instrument with just one keyboard there is opportunity to share parts between the hands in some sections. The realisation plays back at 66 dotted quarter notes (crotchet) beats to the minute. From the music setting point of view this is quite a challenging piece particularly sorting out the two top voices which often are together in the same clef. For the player separating the voices by playing stems up for one voice and stems down for another offers clarity in understanding of the parts.