This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs character piece "Xenophon and Sybil" (Xenophon und Sybille, Wq. 117/29) is a narrative work included in the 1765 collection of character pieces. The title refers to the ancient Greek historian "Xenophon" and the prophetess "Sybil," suggesting the possibility of philosophical or mystical dialogues and scenes expressed through music. The piece is in B-flat major, featuring gentle melodies and delicate harmonies that highlight the characteristics of the Empfindsamer Stil (Sensitive Style). The entire composition exudes a storytelling atmosphere, requiring performers to deliver emotionally rich and poetic expressions. This work is a testament to Emanuel Bachʼs creativity and musical depth.