This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs "Das Privilegium" Wq. 112-06 (H. 693) is a work that stands out for its wide range of emotions and expressiveness within his keyboard music. This piece embodies his "aesthetics of emotion," leaving a profound impression on the listener. The structure of the piece is free, incorporating improvisational elements, which allows the performer room for interpretation. The melody often features unexpected modulations and rhythmic changes, captivating the audience. The delicate ornamentation and dynamic changes common in Bachʼs works add further depth to the music. The innovation and expressiveness of his music can be felt through this piece.