This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Rondo in C Major Wq. 56-01 (H. 260) is one of the most striking pieces among his keyboard works. This rondo, written in a bright and lively C major, offers a sense of familiarity to the listener. The piece adopts a typical rondo form, where the main theme is repeated multiple times, creating a sense of unity and accessibility. Bachʼs unique expressiveness is evident throughout, with particularly rich ornamentation and rhythmic variations, providing a technical challenge for performers. It is a piece that showcases the wide range of emotions found in his works and reflects the innovation during the transition to the Classical period.