This edition contains a selection of Bach's organ works in Urtext form, including preludes, toccatas, fantasias, and fugues. Edited by Dietrich Kilian, it provides an accurate and historically informed score. The work is intended for advanced organists, offering both technical and musical challenges, suitable for study and performance. This volume is part of the Baerenreiter Urtext edition of Bach's organ music. It includes preludes, toccatas, fantasias, and fugues carefully edited based on historical sources. The edition presents original notation with attention to articulation, pedal usage, and ornamentation. It is suitable for both performance and academic research, highlighting Bach's baroque organ techniques and stylistic nuances. Johann Sebastian Bach (1685-1750) was a German Baroque composer and organist, widely regarded as one of the greatest composers in Western classical music. His organ works are central to the repertoire. Dietrich Kilian is a renowned musicologist and editor of Bach's works, specializing in critical editions and historically informed performances.