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 A Minor Wq. 57-02 (H. 247) is a work that showcases his unique expressiveness and emotional depth. The first movement is marked by a powerful rhythm and contrasting melodies, filled with an energy that captivates the listener. The following second movement exudes a calm and introspective atmosphere, highlighting delicate emotional expression. The final movement is characterized by a lively tempo and dynamic development, where tension and release intertwine throughout. This sonata not only demonstrates Bachʼs creativity and technical prowess but also allows one to experience the wide range of emotions present in his music.