Dr. Landgrave has served as minister of music for twelve churches in several states. Best known for his extensive church music compositions, he has published over 100 anthems, four cantatas, 1 oratorio, 2 musical dramas, 4 contemporary musicals, 2 choral series, and some 30 solos and hymns. He has led numerous musical mission endeavors in 26 states and over 20 foreign countries and has published choral collections in Portuguese, Spanish, and Russian. A conference leader at Music Weeks for Ridgecrest and Glorieta, he also serves as adjudicator and clinician for numerous festivals and workshops.