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 A minor Wq. 50-03 (H. 138) is one of the works that showcases his unique musical style. This sonata consists of three movements, each with a different tempo and emotion. The first movement is characterized by its rapid and energetic motion, drawing the audience in with its strength. The following second movement has a leisurely tempo, evoking deep emotions and an introspective atmosphere. The final third movement requires a calm and pure expression, balancing the entire piece. This sonata not only demonstrates Emanuel Bachʼs creativity and sensitivity but also reflects how his music served as a bridge to the Classical era.