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 Sonatina in C Major Wq. 103 (H. 457) is a work that showcases his creativity and rich emotional expression. The first movement is characterized by its elegant and flowing melody, which brings a sense of calm to the listener. The following second movement, with its serene tempo, conveys deep emotions and creates a reflective atmosphere. The third movement reintroduces a graceful melody, giving the impression that the music is speaking to the listener. The final fourth movement concludes the piece with lively rhythms and a bright tone. This sonatina exemplifies Emanuel Bachʼs diverse expressive capabilities and serves as a bridge to Classical music.
The Sonatina in C Major H.457/Wq.103, composed in 1763, consists of two movements. The first movement is in a simple rondo form, while the second movement introduces new variations to the keyboard sonata, incorporating strings, horns, and flutes.