Fantasy and Fugue d-moll (BWV905) Fantasy and Fugue in D minor BWV 905?, originally written for keyboard, is one of Bachs least known works. The Fantasy is of moderate tempo and relatively short. The top two lines have many suspensions while the bottom line is scalelike. The Fugue is more lengthy with the top lines trading off short repeated passages while the bass line winds around, alternating scales and octave jumps. Mr. Sauers excellent arrangement is appropriate for advanced performers and is about 6 minutes in length.