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. 62-16 (H. 116) is one of the particularly captivating works among his keyboard music. This sonata consists of three movements, each with a distinct tempo and character. The first movement is characterized by a lively and bright melody, showcasing Bachʼs innovative sense of harmony and rhythmic variation. The following second movement has a calm and introspective atmosphere, requiring expressive emotional interpretation. The final third movement is notable for its light and flowing melody, possessing the brightness and energy suitable for concluding the piece. This sonata reflects Emanuel Bachʼs typical style known as "Empfindsamer Stil" (sensitive style), demonstrating the emotional depth and technical sophistication of his music. Performers are tasked with skillfully expressing the differing characters of each movement, offering the audience a diverse emotional journey.