This site introduces unknown composer Emanuel Bach (C. P. E. Bach). This English version was translated from Japanese one by ChatGPT.
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs “Alla Polacca in C Major Wq. 116-04 (H. 215)” is a work that shines with his unique expressiveness and creativity. This piece, while based on the rhythm of a polonaise, distinctly reflects his individual style throughout. The bright and lively key of C major imparts joy and energy to the listener. The structure of the piece is simple, yet it is richly adorned with clever ornamentation and rhythmic variations. Particularly, the unexpected modulations and dynamic changes serve as elements that captivate the audience. It is a piece that allows one to enjoy the diversity of emotions and depth of expression in Emanuel Bachʼs music.