A sequence (Latin: sequentia) is a chant sung or recited during the Mass, before the proclamation of the Gospel. By the time of the Council of Trent (1543-1563) there were sequences for many feasts in the Church's year. Until 1970, the sequence was always sung before the Gospel. Since the promulgation of the Missal of Paul VI (1970) it has been brought forward to before the Alleluia and its psalm verse. The form of this chant inspired a genre of Latin poetry written in a non-classical metre, often on a sacred Christian subject, which is also called a sequence.