 He also regularly conducted campus choirs and the Bob Jones Symphony Orchestra, especially in its annual opera productions.As a composer Gustafson was best known for his sacred choral compositions and arrangements, although his more than 160 works included five film scores, a string quartet, "Encounters" (a violin concerto), and numerous extended compositions for chorus and orchestra, including "Three Psalms for Chorus and Orchestra" (1989) and "Words of Passion and Resurrection" (2002).