Complex sentence: From 1988-2002, Blackstone led the University of Michigan Men's Glee Club, touring extensively throughout Australia, Eastern and Central Europe, Asia, South America, and the United States.
Split into simpler sentences: From 1988-2002, Blackstone was the conductor of the University of Michigan Men's Glee Club. He led the group on tours of Australia, Eastern and Central Europe, Asia, South America, and the United States.