Toccata and Fugue in D minor, BWV 565, originally for organ music, is one of the masterpieces of Bach's youth. It was later adapted into orchestral music by Polish composer Stokowski. It was also composed by Polish pianist, and composer Taosi Adapted to piano music. The music is in d minor, in 4/4 time. The introduction of the Adagio composed of the descending melody is full and powerful, rendering and paving the way for the magnificent momentum of the whole song (segment 1); then, the music plays a magnificent chord, and then presents a toccata theme with a dramatic Composition: After the Toccata theme ends, a fugue theme appears in the upper part of the music (fragment 2), using the same musical material as the intro part; then, the fugue theme is moved to the lower part for presentation, repeated eight times before and after, The mood of the music gradually rises; finally, the music reappears the Toccata part, ending with a majestic ending. The organ performance version of the work is selected here. This work was once quoted by Richard Clayderman, the modern "Prince of Emotional Piano," and made it widely circulated.

Toccata is a genre that is relatively free and close to improvisation, and it is highly skilled, especially the use of foot buttons. There are a variety of imitations and counterpoints frequently appearing, and occasionally there are short main harmonic passages. It generally consists of several paragraphs, alternating between slow and fast, often starting with a slow rhapsody-style paragraph, in contrast to the more stringent formatting paragraphs that follow.

Toccata is a kind of music played by keyboard instruments. It is a fast and clear rhythm.

This form of music originated in northern Italy during the Renaissance. In the 1590s, a batch of toccata came out. Later, composers brought this form of music to Germany. There, the development of toccata reached its zenith, marked by the work of Johann Sebastian Bach.

Bach's Toccata is a classic in this form of music. These organ works are improvisations, usually accompanied by a separate fugue. In this case, Toccata replaced the generally fixed overture. His harpsichord works usually have multiple movements, written in fugue form.