This study presents an overview of the compositional style of David Maslanka and an analysis of his piece for wind band Unending Stream of Life. The sevenmovement work is based in part on the melody of the hymn tune “Lasst uns Erfreuen”, which is commonly known as “All Creatures of Our God and King.” David Maslanka has developed a unique compositional style that has been strongly influenced by the chorales of J.S. Bach and the writings of Swiss psychologist Carl Jung. Through the process of “active imagining” (Jung, 1964) Maslanka creates original works for wind band. The use of a hymn tune melody and short motives, both conventional and contemporary harmonic progressions, baroque and classical forms, tonal centricity, strong rhythmic drive, expanded instrumentation, and the theme of transformation are all essential to Maslanka’s compositional style. The study is intended to inform scholars and conductors about the: (1) melodic material, (2) harmony and tonality, (3) form, rhythm and tempo relations, (4) orchestration, and (5) unifying elements and musical nuances of David Maslanka’s Unending Stream of Life. / Introduction to the study -- Review of related literature -- Compositional style of David Maslanka -- History and analysis of the hymn tune Lasst uns erfreuen -- Background and analysis of Unending stream of life -- Summary and conclusions. / School of Music