A vibrant early Bach work showcasing his mastery of improvisatory figuration and contrapuntal writing for organ, often used as pedagogical material for pedal technique.
This three-movement organ work opens with a fugue featuring a distinctive "Morse code" motif, followed by a contemplative Adagio and concluding with an Allegro based on a descending hexachord. Despite its attribution to Bach in the BWV catalog, musicologists question its authenticity due to unusual repetitive structures, suggesting it may be an early or spurious work.
