Complex sentence: He was appointed Principal Clarinetist of the Milwaukee Symphony in 1961, and spent the next three summers in Fontainbleau, France, at Le Conservatoire Americain, studying with Marcel Jean in Paris, and chamber music with Mademoiselle Nadia Boulanger.
Split into simpler sentences: He was appointed Principal Clarinetist of the Milwaukee Symphony in 1961 and studied at Le Conservatoire Americain. He studied with Marcel Jean in Paris, and studied chamber music with Mademoiselle Nadia Boulanger.