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. 58-04 (H. 188) is one of the works that showcases his mature style. This sonata beautifully merges emotional depth with technical sophistication. The first movement is light yet introspective, captivating the listener with its charm. The following second movement is notable for its serene and flowing melody, leaving a lasting impression of beauty. The final movement is characterized by its lively and energetic development, conveying a sense of powerful dynamism that overwhelms the audience. Throughout the entire sonata, Emanuel Bachʼs unique musical expression stands out, allowing one to fully appreciate his creativity and technical prowess.