This edition of the Missale Romanum (“Roman Missal”) helped standardize the way Catholics celebrated Mass for nearly four centuries. The Council of Trent enacted reforms to the Mass with the aim of creating uniformity in Catholic worship. In 1570, Pope Pius V fulfilled this decree by promulgating the Roman Missal, which contained all the texts, instructions, rubrics, and some of the music needed for the Catholic liturgy. This 1572 edition was published in Antwerp by the famous Plantin-Moretus press founded by Christophe Plantin, and is regarded by some as a masterpiece in typography. The “Tridentine Mass” defined in its pages would remain largely unchanged until the Second Vatican Council.