Mr. Mullen has spent over thirty years directing choirs, studying the liberal arts and Catholic liturgical music.

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His primary focus is upon the teaching of beautiful liturgical song according to the principles and pedagogic practices as found in the medieval choir schools of European Christendom. He has taught for small independent schools since 2017.

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He has extant particular experience applying the liberal arts of arithmetic, music and geometry in the building of musical instruments. For eighteen years he was employed as manager for Schulmerich Carillons Inc. in Sellersville PA.; overseeing every aspect of their Handbell and MelodyChime manufacturing. While there, he specialized in the tuning of bells and applying temperaments. He is a luthier of historical musical instruments, and has been building ancient lutes, viols, harps and medieval fiddles for close to thirty years. He has worked in the harpsichord shop of Williard Martin in Bethlehem PA and also studied lute construction with one of the world’s foremost historical luthiers; David Van Edwards, from Norwich England.

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An accomplished musician, he has demonstrated a level of proficiency as a lutenist, classical guitarist, composer and vocalist.

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His passion for music, Scholastic Philosophy, and education in light of the Seven Liberal Arts has led him to a unique perspective and understanding into the nature of singing and the choral arts.