The Duet in F BWV 803 was published in 1739 being one of 4 Duettos. The sheet music copy available from the PlentyMusic website has suggested fingering in place and the cadential ornamentation is written out. The second duet in F major BWV 803 is a fugue written in the form of a da capo aria ABA. The 4 Duets are part of Clavier-Übung III or the German Organ Mass and composed really at the zenith of the composer’s contrapuntal writing. The edited music score has suggested fingering in place which should serve as a useful guide in the first instance. The music editor’s concept is that once familiarised with the movement players will default to the plain score perhaps substituting their own choice of fingering when they feel it is appropriate. The organ realisation and video score keeps to the same registration but in a performance there is opportunity to change the registration in the middle B section. The organ realisation plays back at 84 quarter note beats to the minute.