The 24nd edition of “O Flos Colende” Sacred Music in Florence, founded in 1997 to celebrate the 700th anniversary of the laying of the cornerstone of Florence’s Cathedral Santa Maria del Fiore, is presented by the artistic director Gabriele Giacomelli which includes a program of 7 events showcasing world-renowned performers. One of the main purposes of the event is to introduce the public to an often-forgotten musical heritage, directly linked to the city’s history, for the most part kept away in the precious Music Archive of the Opera di Santa Maria del Fiore.