Final answer:
Carl Philipp Emanuel Bach was the founder of empfindsamer stil, characterized by emotional expressiveness and elaborate ornamentation in music.
Step-by-step explanation:
The founder of empfindsamer stil, or the sensitive style, was Carl Philipp Emanuel Bach, the second son of Johann Sebastian Bach. He was a composer and musician who contributed to the development of the Classical period of music. This style was characterized by its emotional expressiveness and elaborate ornamentation.