Because its fugue was never completed, J. S. Bach's Fantasia and Fugue for keyboard in C minor, BWV 906, is sometimes known simply as the Fantasia in C minor; it is one of relatively few Bach harpsichord prelude and fugue pieces whose authenticity has not been questioned, for it survives in an autograph manuscript. 8 pages.
Because its fugue was never completed, J. S. Bach's Fantasia and Fugue for keyboard in C minor, BWV 906, is sometimes known simply as the Fantasia in C minor; it is one of relatively few Bach harpsichord prelude and fugue pieces whose authenticity has not been questioned, for it survives in an autograph manuscript. 8 pages.