Complex sentence: After completing her studies, she worked as professor of music theory at the Conservatoire of Aubervilliers, and in 1983 became a professor of music analysis at the Paris Conservatoire.
Split into simpler sentences: After completing her studies, she worked as professor of music theory at the Conservatoire of Aubervilliers. In 1983 became a professor of music analysis at the Paris Conservatoire.