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-flat Major Wq. 52-01 (H. 50) is one of the most refined works in his keyboard music. This sonata, while influenced by his father Johann Sebastian Bach, also exhibits characteristics that indicate a transition to the Classical period. The first movement is lively yet possesses a meticulous structure, captivating the listener. The second movement expresses deep emotion and exudes an introspective atmosphere. The final third movement is a vibrant finale, featuring a series of technical passages that challenge the performerʼs skill. This sonata showcases Emanuel Bachʼs diverse compositional techniques and reflects the musical transformations of his era.