This site introduces unknown Emanuel Bach (C. P. E. Bach).
The Oboe Concerto Wq. 164 was arranged to create the Keyboard Concerto Wq. 39.
ChatGPT4o writes as follows (please note that it may not be accurate):
Emanuel Bachʼs Oboe Concerto in B-flat major Wq. 164 (H. 466) is a work composed in 1765, characterized by the elegant and accessible galant style. This concerto features melodic ornamentation and delicate rhythmic handling throughout, with the soft, singing tone of the solo oboe standing out. The first movement presents a lively and flowing theme, with rhythms that include subtle syncopations, giving the piece a sense of dynamism. In the second movement, the oboeʼs melody exhibits lyrical and profound expressiveness, showcasing the characteristics of the empfindsamer Stil. The slow harmonic progression and the decorative melody that utilizes the oboeʼs wide range create an introspective and meditative atmosphere. The third movement is structured as a rhythmic and light-hearted finale, exuding the refined elegance of the galant style. This work skillfully employs the oboeʼs technical and expressive capabilities and later reveals new charm through its arrangement into the Keyboard Concerto Wq. 39.