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 minor Wq. 61-05 (H. 287) is a work that demonstrates his mature compositional technique. This sonata consists of three movements, each possessing distinct emotions and expressions. The first movement has a lively yet introspective atmosphere, captivating the listener with its charm. The following second movement is notable for its serene and deeply emotional melody, leaving a lasting impression with its beauty. The final third movement regains vitality, concluding the sonata with an energetic development. This piece allows one to feel Bachʼs unique musical perspective and expressiveness.