Accompanied on the Duomo’s organ by Clemens Haudumcon and conducted by former choir member and acclaimed singer Christian Fliegner, Tölzer Knabenchor will offer visitors the experience of a specially designed program which includes the masterpieces of Mozart’s “Ave Maria, K. 554,” “Hallelujah, K. 553”, Mendelssohn’s “Three Motets, Op. 39,” and Rossini’s “Three Religious Choirs,” written after Rossini retired from the opera scene. Tölzer Knabenchor, known for clarity of sound and the ability to perform a wide range of music, will also perform lesser known composers Johann Michael Haydn (brother of Franz Joseph Haydn) and Giovanni Giorgi.