Thomen is a private and class voice instructor at Concordia University Chicago and at the University of St. Francis where he also teaches private voice lessons, musical, fine arts, and language diction classes.

A trained tenor, Thomen has been a professional ensemble member and soloist with the Chicago Symphony Chorus, Music of the Baroque, the Chicago Monteverdi Singers, the Chicago Baroque Ensemble, the Richard Boldrey Singers and the Tudor Singers. He has performed with the Dorian Opera Theater, Chicago Opera Theater, Light Opera Works, Hinsdale Opera Theater and University of Hawaii Theater. He has appeared as a soloist with numerous orchestral presentations and has conducted numerous major choral works with orchestra including Handel’s Messiah, John Rutter’s Requiem, Faure’s Requiem and Vivaldi’s Gloria. 

Academic and Professional Highlights


• American Guild of Musical Artists
• National Association of Teachers of Singing