This site introduces unknown composer Emanuel Bach (C. P. E. Bach). This English version was translated from Japanese one by ChatGPT.
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sonata in B-flat Major Wq. 59-03 (H. 282) is a work with a unique charm among his keyboard music. The first movement is lively yet features a profound melody that captivates the listener. The following second movement is imbued with rich emotions at a leisurely tempo, highlighting an introspective expression. The final movement is characterized by its graceful and flowing melody, showcasing Bachʼs originality and sensitivity throughout. This sonata exemplifies the diverse expressiveness and technical sophistication in his music.