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 C Major Wq. 65-08 (H. 17) is one of the particularly captivating works among his keyboard music. This sonata consists of three movements, with the first movement being "Allegro," characterized by its bright and lively melody. The second movement, "Andante," stands out with its calm and emotionally rich expression, allowing one to feel Bachʼs inner depth. The final third movement, "Allegretto," offers a light and rhythmic finale, beautifully concluding the overall structure. This sonata reflects Bachʼs unique sensibility and the transitional style towards the Classical period, serving as a fine example of his musical innovation. Emanuel Bachʼs works, while influenced by his father Johann Sebastian Bach, pursue a unique expression, and this sonata provides a glimpse into that pursuit.