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 Polonaise in A Major Wq. 116-34 (H. 308) is a work that stands out for its wide range of emotions and expressiveness within his keyboard music. This polonaise is characterized by its elegant yet powerful rhythm, maintaining the tradition of the dance while also showcasing unique creativity. The melody flows smoothly, with occasional ornamental notes adding a touch of brilliance. The harmonic progression takes unexpected turns, captivating the listener. The diversity of emotions in Emanuel Bachʼs music and his forward-thinking expressive techniques are evident in this piece.