Complex sentence: Composer James Horner refused to work with Cameron for a decade following their strained working relationship on 1986's "Aliens"; they eventually settled their differences, and Horner went on to score both "Titanic" and "Avatar".
Split into simpler sentences: Composer James Horner refused to work with Cameron for a decade following their strained working relationship on 1986's "Aliens". They eventually settled their differences, and Horner went on to score both "Titanic" and "Avatar".