Complex sentence: DePreist was one of the first African-American conductors on the world stage, he is currently the director of conducting and orchestral studies at the Juilliard School and laureate music director of the Oregon Symphony.
Split into simpler sentences: DePreist was one of the first African-American conductors on the world stage. He was the director of conducting and orchestral studies at the Juilliard School and laureate music director of the Oregon Symphony.