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 D minor Wq. 62-15 (H. 105) is one of the most emotionally rich and expressive works among his keyboard music. This sonata, while influenced by his father Johann Sebastian Bach, showcases a unique style that marks the transition to the Classical period. The first movement features a powerful theme and contrasting episodes that alternate, creating a dynamic development that captivates the audience. The second movement possesses a calm and introspective atmosphere, expressing deep emotions. The final third movement is characterized by a lively and rhythmic motion. This sonata highlights Emanuel Bachʼs innovative use of harmony and rhythm, demonstrating the emotional depth and technical sophistication of his music. For performers, it is a challenging piece that demands both expressiveness and technical skill.