Elizabeth Lyon Hall, Executive Director of the COLLIS Institute for Catholic Thought and Culture at Cornell University, is a historian with research specialties in late antique and medieval music theory, Augustinian philosophy, and the medieval theology of sacred music. She trained as a professional cellist on modern and historical cellos and directs the sacred music choirs at COLLIS Institute. A graduate of Columbia and Juilliard, she has been a Postdoctoral Fellow at the Max Planck Institute for Empirical Aesthetics (Frankfurt am Main). She received her PhD in musicology from Cornell.