Lecture is the approach traditionally used to teach music theory courses. Although efficient in the delivery of large amounts of information in a short period of time, lecture lacks the effectiveness of an active learning approach. "Theory Survivor" is a unique cooperative-learning method based on the Student Teams-Achievement Divisions technique created by Robert Slavin. It combines the efficiency of lecture with the effectiveness of active learning. Using the motivational forces of group cohesion, extrinsic rewards, and positive peer pressure to its advantage, Theory Survivor provides a rich educational environment in which students thrive.