This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sonata in E minor Wq. 52/6 (H. 129) is one of the works that showcases his unique musical style. This sonata is characterized by its expression of emotion and bold harmonic progressions, and is considered an important piece during the transition to Classical music. The first movement is notable for its strong rhythm and dramatic development, filled with energy that captivates the audience. The second movement offers a calm and introspective atmosphere, providing contrasting emotions. The third movement is a lively finale, highlighted by technical passages and dynamic expression. This sonata is an excellent example of Bachʼs creativity and technical mastery, allowing one to experience the depth of diverse emotions in his music.