The Toccata and Fugue in D minor, BWV 565, stands as one of the most recognizable and celebrated compositions in Western classical music. Composed by Johann Sebastian Bach, this piece, with its dramatic and bold opening, has become synonymous with Gothic ambiance and is frequently featured in films, particularly in scenes of horror or suspense. But beyond its fame and modern adaptations lies a rich history of mystery, virtuosity, and a testament to Bach's genius.