It is Bach's BWV.565 lt; Toccata and Fugue in D minor gt;

"Toccata and Fugue in D minor" was originally an organ piece . The pipe organ has a wide range of sounds, varied timbres, huge volume, and majestic momentum. It was once known as the "King of Musical Instruments." The largest one can be several stories high, with five levels of keyboards and tens of thousands of musical pipes. Bach was best at playing the organ, and the sound concepts of his works were almost all based on it. This piece of music is one of the masterpieces of his organ works, with gorgeous technique, style and majestic dramatic plot. According to analysis, it was created by the author specifically for Arnstadt's new organ between 1704 and 1707. Since the organ is very large and complex in structure, it cannot be put on the concert stage, so there is no chance to introduce this work to the general audience. To this end, the American conductor Stokovsky adapted it into an orchestral piece, using rich instrumental colors to recreate its majestic spirit and profound artistic conception on the concert stage. The music consists of a toccata and a fugue. The musical images of the two parts are very unified, all based on the same musical idea.

The toccata is free and improvised, just like A recitative with exaggerated expressions. The fugue is very close to the main theme style, with no fixed theme and no complex interweaving of horizontal melodic lines. Especially at the end, there is a series of chord progressions with brilliant phrases, as if they have returned to the beginning. Toccata further strengthens the integrity and unity of the entire piece.

"Toccata and Fugue in D minor" is one of Bach's masterpieces in his youth. It was later adapted into an orchestral piece by Polish composer Stokovsky and composed by Polish pianist and composer Transcribed for piano by Taussig. The music is in the key of D minor and in 4/4 time. The introduction of the Adagio composed of descending melody is full and powerful, exaggerating and paving the way for the majestic momentum of the whole piece; then, the music plays majestic chords, and then presents the Toccata theme, with dramatic elements; in the Toccata theme After the Kata theme ends, the fugue theme appears in the upper part of the music, using the same musical materials as the introduction part; then, the fugue theme is moved to the lower part and presented eight times, and the musical emotion gradually rises; finally, The music reproduces the toccata part and ends with a majestic coda. The organ version of the work is chosen here. This work has been quoted by the modern "Prince of Emotional Piano" Richard Clayderman, making it widely circulated.

The original Italian meaning of Toccata is touch, and Fugue is the transliteration of the Latin word FUGA, which represents the meaning of escape