This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Sinfonia Wq. 177 (H. 652) is one of his later works and symbolizes the transformation of music in the late 18th century. This sinfonia, though brief, possesses a dramatic development that captivates the audience. His music is characterized by sudden emotional shifts and unpredictable developments, and this work is no exception. Particularly, the contrast in dynamics and changes in rhythm are skillfully employed, leaving a strong impression on the listener. He explores new methods of expression during the transition from the Baroque to the Classical period, establishing his unique style. Sinfonia Wq. 177 is a work that reflects his innovative spirit and musical curiosity.
This piece, Wq. 177, is almost the same as Wq. 178, which was written for an orchestra including wind instruments, but it is composed for strings and basso continuo.