This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
The sonata by Emanuel Bach (C. P. E. Bach) is an excellent work that showcases his unique musical style. This sonata consists of three movements, each with different emotions and tempos. The first movement offers a lively and energetic beginning with a fast tempo, leaving a strong impression that draws in the audience. The following second movement, with its slow tempo, expresses tenderness and emotional depth, evoking a sense of inner calm. The final third movement provides a light and rhythmic finale, balancing the overall piece and leaving the audience with a sense of satisfaction. This sonata is a typical example of Emanuel Bachʼs creativity and rich emotional expression, illustrating how his music served as a bridge to the Classical period.
The next movement ʼLargo con tenerezzaʼ is written in the form of an aria, similar to the middle movements of previous works in this volume, and features expressively chromatic notes in its melody. The third movement ʼAllegrettoʼ begins with a simple triple meter melody reminiscent of a minuet, but soon the melody and harmony become more complex, displaying characteristics not typically found in a standard minuet."
For an overview of Wq. 65 as a whole, see Sonata Collection Wq. 65 .