Organ audition requirements include a selection of three contrasting pieces from four different areas; one work by J. S. Bach, and two works from the Pre-Bach period, the Romantic, or the comtemporary period (four major works for the A.D. audition).
Dr. Horst Buchholz, organ faculty at the University of Denver, is also Director of Music and Principal Organist at the Cathedral of the Immaculate Conception and Professor of Church Music at the St. John Vianney Seminary.