Tomorrow, the church of St John Cantius in Chicago, Illinois, will host a free concert celebrating the spiritual and significance of Notre-Dame de Paris. The program will feature a combined choir of over 100 voices from choruses around Chicago; the famed Messe Solennelle, Op.16, by Louis Vierne will be sung accompanied by the historic Casavant Frères pipe organ and other French works composed in Paris at Notre Dame. Donations will be received, and the funds will be used to help restore Notre Dame. See the full program here at the church’s website.