On Sunday, March 9, at 11:15 a.m. the musical portions of the Eucharist (Kyrie, Sanctus, and Agnus Dei) will be sung by the choir. While these are customarily sung by the entire congregation at St. James’s, in many churches, and throughout the majority of Christian history, these portions of the liturgy have been sung by the choir alone. Musicians over the centuries have composed thousands of exquisite settings of the service. We will sing the Solemn Mass in C# minor by the French organist and composer Louis Vierne (1870-1937). Vierne served as an assistant to the organist Charles-Marie Widor at the church of Saint-Sulpice in Paris. He subsequently became principal organist at the cathedral of Notre-Dame de Paris, a post he held from 1900 until his death in 1937. Our choir sang Vierne’s Solemn Mass at Notre Dame on Sunday, July 11, 2010.