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. 65-09 (H. 18) is one of the particularly captivating works among his keyboard music. This sonata consists of three movements, each expressing different emotions and styles. The first movement is characterized by a calm and graceful melody, creating a soothing atmosphere for the listener. The following second movement delves into deeper emotions, presenting introspective and sentimental music. The final third movement is a lively and energetic finale, featuring impressive technical passages. This sonata exemplifies Emanuel Bachʼs unique expressiveness and serves as a bridge to classical music, embodying his innovative musical style.