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 G minor Wq. 65-17 (H. 47) is a work that stands out for its deep emotional expression and dramatic quality among his keyboard music. The key of G minor imparts a strong sense of tension and shadow throughout the piece. The first movement progresses at a cautious pace in sonata form, with contrapuntal elements and emotional intensity leaving a strong impression. The development of the themes showcases Emanuel Bachʼs characteristic originality. The second movement is a quintessential example of the empfindsamer Stil, with delicate harmonies and introspective melodies creating profound lyricism. When performed on the clavichord, this movement highlights subtle nuances, further enhancing the inner beauty of the music. The third movement is a finale characterized by a fast tempo and energetic development, with dance-like elements that excite the listener. This sonata is a work where the clarity of form and depth of emotional expression are beautifully fused, and its charm is maximized when performed on the clavichord or fortepiano.