Killian has a Bachelor of Arts in Music degree in classical guitar performance from Bridgewater State University, where his studies included composition and pedagogy. While attending, he attended National Conference for Undergraduate Research, and wrote for the undergraduate philosophy journal. He composes and performs musical theater, pop, metal, and concert music. He has taught guitar to students of all ages and levels, and in a variety of genres. He works with his students to ensure technical proficiency, while focusing on musicality and creative expression.