Vatican City, Jan 21, 2019 / 04:45 pm (CNA).- With a motu proprio released Jan. 19, Pope Francis put the Sistine Chapel Choir under the administration of the Office of Pontifical Liturgical Celebrations, appointing Mons. Guido Marini, who is the master of ceremonies for papal liturgies, to the helm, and entrusting him with drafting the choir’s new statutes.