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 B minor Wq. 55/3 (H. 245) is a work that showcases his unique musical style. This sonata is characterized by its depth of emotion and expressive melodies. The first movement is lively yet possesses an inner tension that captivates the listener. The following second movement exudes a calm and meditative atmosphere, with melodies that resonate deeply. The final movement is notable for its singing melody, overflowing with elegance and emotion throughout. This sonata is a brilliant fusion of Bachʼs creativity and technique, reflecting the diversity of his music.