Complex sentence: Hagans has taught master classes at universities both here and abroad, and he taught music at the University of Cincinnati from 1982 to 1984, and at Berklee College of Music from 1984 to 1987.
Split into simpler sentences: Hagans has taught master classes at universities both here and abroad. He taught at the University of Cincinnati from 1982 to 1984, and at Berklee College of Music from 1984 to 1987.