This site introduces unknown Emanuel Bach (C. P. E. Bach).
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs "Alla Polacca in D Major Wq. 114-05 (H. 232)" is one of the particularly captivating pieces among his keyboard works. This composition, based on the rhythm of a polonaise, is lively and rhythmic, delighting its listeners. The bright key of D major imparts vitality and energy throughout the piece. In this work, Bach employs skillful ornamentation and varied dynamics to convey a wide range of emotions to the audience. His unique expressiveness adds rich depth to the music. For performers, it offers both a technical challenge and the joy of playing with emotional richness.