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 "Sophie" (Wq. 117-40) is an elegant and lyrical work included in the 1765 collection of "Character Pieces." The piece is in E-flat major and is characterized by its gentle and charming melody. The title suggests a dedication to a specific person or an intimate sentiment, and the entire piece exudes a warm and intimate atmosphere. Beautiful expressions of the Empfindsamer Stil (sensitive style) are evident throughout, with delicate ornaments enhancing its poetic nuances. Performers are required to skillfully bring out the emotionally rich expression of this piece.