Answer
C.P.E. Bach's music marked a transition from the elaborate and ornamented Baroque style to the simpler, more emotionally expressive Classical style. He incorporated elements of both styles, creating a unique sound that influenced the development of Western music. C.P.E. Bach's music is characterized by its use of dynamic contrast, chromaticism, and expressive melodies. He also experimented with new forms and structures, paving the way for the Classical period.