Hans Bischoff (1852--1889) was a German concert pianist and well-regarded music editor, who continues to be respected for his thorough research, attention to detail, and careful consideration of source materials. This newly engraved edition of the Chromatic Fantasy and Fugue, BWV 903 is based on Bischoff's analysis of several documents, including a 1730 manuscript belonging to the Berlin Royal Library. Bischoff's footnotes and prefatory commentary have been preserved, as well as his interpretive suggestions for performance. Also includes explanations of the ornaments used throughout the work, helpful fingering, and suggested realizations for the execution of the arpeggiated chords found in the "Fantasy." Measure numbers and BWV numbers have been included for easy reference.