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 minor Wq. 114-03 (H. 230) is a work that showcases his expressive emotional range. This sonata is characterized by rapid changes and contrasts, which captivate the listener. From the outset, a tense melody unfolds, followed by sections that exude a reflective and calm atmosphere. In the middle section, dramatic developments occur, heightening the tension once more. The final movement combines strength and passion, leaving a strong impression on the audience. Emanuel Bachʼs music serves as a bridge to the Classical era while strongly asserting his own individuality. This sonata is a piece that allows one to fully appreciate his compositional techniques and the breadth of his emotional expression.