Complex sentence: In 1984, for Randy Stonehill's album "Celebrate This Heartbeat", Keaggy and Stonehill co-wrote and sang the duet "Who Will Save the Children?", which served as a theme song for Compassion International, a Christian child advocacy ministry.
Split into simpler sentences: In 1984, Keaggy and Randy Stonehill co-wrote and sang the duet "Who Will Save the Children?" for Stonehill's album "Celebrate This Heartbeat". The duet would also serve as a theme song for Compassion International, a Christian child advocacy ministry.