This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Composed in [1750], Emanuel Bachʼs Sonata in B minor Wq. 65-13 (H. 32-05) is one of the most emotionally rich and expressive works in his keyboard music. This sonata, while influenced by his father Johann Sebastian Bach, possesses a unique style that hints at the transition to the Classical era. The first movement is lively yet carries an inner tension that captivates the listener. The following second movement exudes deep emotion and a meditative atmosphere, showcasing Bachʼs delicate expressiveness. The final third movement is a vibrant and energetic finale, characterized by technical prowess and dynamic development. This sonata not only demonstrates Emanuel Bachʼs innovative musical language but also stands as a symbol of the musical transformation of his time, holding an important place in the keyboard repertoire.