Carl Philipp Emanuel Bach (8 March 1714 – 14 December 1788), also formerly spelled Karl Philipp Emmanuel Bach, and commonly abbreviated C. P. E. Bach, was a German composer and musician of the Baroque and Classical eras. He was the fifth child and second surviving son of Johann Sebastian Bach and Maria Barbara Bach.
Bach was an influential composer working at a time of transition between his father's Baroque style and the Classical style that followed it. He was the principal representative of the empfindsamer Stil or 'sensitive style'. The qualities of his keyboard music are forerunners of the expressiveness of Romantic music, in deliberate contrast to the statuesque forms of Baroque music. His organ sonatas mainly come from the galant style.