Fantasy and Fugue in d-minor 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 (optionally performed on Tuba) 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. All parts are in bass clef.