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 D Major Wq. 112-17 (H. 170) is one of his works that showcases his diverse expressive capabilities. This piece is a lively and rhythmic composition based on the rhythm of a polonaise, giving listeners a bright and energetic impression. In this work, Bach uses a unique combination of rhythm and melody to create music that captivates the audience. The structure of the piece is simple, yet it is characterized by clever ornamentation and varied dynamics. This allows performers to expand their range of expression and offer fresh surprises to the audience. Emanuel Bachʼs works possess an innovative quality that transcended the musical boundaries of his time, greatly influencing later composers.