Beethoven declared in a letter from 1822 that his Mass in D, “Missa solemnis,” was the “greatest work I have composed so far.” The “Missa solemnis” is Beethoven’s largest and longest composition (not counting his opera Fidelio), and yet one of his most intimate and personal. He inscribed the opening of the Kyrie with the words: “From the heart—may it go again to the heart.” A live performance of the “Missa solemnis” is a once-in-a-lifetime experience not to be missed!