This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs **Fugue in A Major Wq. 119-04 (H. 101)** is a work characterized by its bright and dynamic melody and sophisticated counterpoint. The initial theme is presented in a lively and light manner, enveloping the entire piece in a cheerful and optimistic atmosphere. Each voice intertwines naturally, creating a pleasant harmony with a flowing movement of sound. In the middle section, modulations and changes in counter-melody are skillfully employed, adding rich color and movement to the music. The development of the theme is meticulous yet conveys a sense of free expression, bringing an improvisational lightness that adds flexibility to the music. Towards the end, the theme is grandly recapitulated, concluding with a bright and full-bodied sound. This fugue showcases a remarkable fusion of the strict counterpoint inherited from his father, Johann Sebastian Bach, and the soft expression of the empfindsamer Stil. The clear and open sound combined with the intricate structure leaves the listener with a refreshing and intellectual impression.