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 B-flat Major Wq. 62-01 (H. 2) is one of the particularly captivating works among his keyboard music. This sonata, while influenced by his father Johann Sebastian Bach, possesses its own unique expressiveness and emotional style. The first movement begins with lively and energetic motion, immediately drawing in the audience. The following second movement exudes a calm and introspective atmosphere, highlighting Bachʼs delicate melodic lines. The final third movement returns to a lively tempo, culminating in a brilliant and powerful finale. This sonata not only demonstrates Emanuel Bachʼs innovative musical style but also serves as a bridge to classical music. His works are a fusion of emotional expression and technical skill, bringing a fresh breeze to the music world of his time.