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 "Gabriel" (La Gabrielle, Wq. 117/35) is an elegant and sophisticated work included in the 1765 collection of character pieces. It is set in E-flat major and is characterized by its gentle melody and beautiful harmonies. The title may convey personal emotions or thoughts about a specific person. The slow tempo and delicate ornamentation lend an intimate atmosphere to the entire piece. Despite its brevity, it possesses profound expressiveness, requiring the performer to convey subtle emotional nuances.