Complex sentence: He has served on the faculty of Harvard University, Indiana University, and the Phillips Academy at Andover; since 1997 he has been the coordinator for the Tanglewood Music Center's composition department.
Split into simpler sentences: He has served on the faculty of Harvard University, Indiana University, and the Phillips Academy at Andover. Since 1997, Gandolfi has been the coordinator for the Tanglewood Music Center's composition department.