This site introduces unknown 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 Prussian Sonata No. 2 in B-flat Major, Wq. 48-2 (H. 25), is one of the works dedicated to “King Frederick II of Prussia,” published in 1742, characterized by its rich sound in B-flat major. The first movement progresses in a lively tempo in sonata form, highlighting the clarity of the themes and their exquisite development. The second movement is marked by a slow tempo, with deep lyricism and delicate harmonies that leave a strong impression. In this movement, the nuances of emotion and the beauty of ornamentation stand out, showcasing the characteristics of the empfindsamer Stil (sensitive style). The third movement features a light rhythm and bright character, incorporating dance-like, approachable elements. This sonata is a representative work from the period when Emanuel Bachʼs compositional technique had matured, making full use of the expressive power of keyboard instruments.
You can listen to performances by Markovina and Spanyi on YouTube. The performance times for each movement by Markovina are 5:33, 3:34, and 2:09, while Spanyiʼs performance times are 6:21, 4:36, and 4:12, with Markovinaʼs third movement being 49% shorter.