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 in C Major Wq. 174 (H. 649) is one of his most vibrant symphonic works. This sinfonia is characterized by its bright and powerful C major sound, filled with energy that captivates the audience. From the outset, a strong theme is presented, followed by sections where clever counterpoint is developed. The second movement adds delicate expression, giving the music depth. In the final movement, lively rhythms return, concluding the piece with brilliance. Emanuel Bachʼs innovative compositional techniques are evident throughout, making it an important work that bridges to the Classical era.