From 1964 to 1974, Bruno Bartoletti, served as co-artistic director and principal conductor, and became sole director and principal from 1974 to 2000. Sir Andrew Davis is Lyric's music director and principal conductor, a post he has occupied since in September 2000. He led three complete cycles of "Der Ring des Nibelungen" in the 2004/05 season to mark the company's 50th anniversary. Davis plans to retire at the end of the 2020–2021 season, and Enrique Mazzola has been named as the new music director and principal conductor.