The Counter-Reformation was a period from the 1530s to the late 1500s where the Catholic Church made reforms to address issues that contributed to the Protestant Reformation and regain the loyalty of its members. The Council of Trent, a group of cardinals concerned with corruption of traditional church music, banned certain musical practices and secular influences during masses to purify worship. Composers like Giovanni Pierluigida Palestrina composed new church music that aligned with the directives of the Council of Trent.