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 E Major Wq. 84 (H. 506) stands out in his keyboard music for its wide range of emotions and expressiveness. This sonata, while influenced by his father Johann Sebastian Bach, establishes its own unique style. It is particularly characterized by unpredictable modulations and rhythmic changes that surprise the listener. The first movement begins with a bright and lively atmosphere, the second movement unfolds an introspective and sentimental melody, and the final movement concludes with a light and vivacious finale, interweaving diverse emotions throughout. This sonata is an important work that demonstrates Emanuel Bachʼs creativity and innovation.