His compositional style is varied and eclectic, ranging from works appropriate for high school and church choirs to more technically-demanding compositions for college and professional choirs. Interested in composing for various media, Clausen's compositional interests include works for the stage, solo voice, film and video composition, choral/orchestral compositions and arrangements, as well as works for orchestra and wind ensemble. He regularly composes on a commission basis, and is a frequent guest conductor and composer-in-residence on a national basis.