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. 55/1 (H. 244) is a work that stands out for its diverse expressions within his keyboard music. The first movement begins with a lively and energetic tempo that captivates the audience. The following second movement exudes a calm and serene atmosphere, contrasting with its deep emotional expression. The final movement, Allegretto, is characterized by its light and rhythmic motion, bringing the piece to a bright conclusion. This sonata is an excellent example of Bachʼs original style and wide emotional range, reflecting his musical curiosity.