What did the council of trent decide about the use of music in the liturgy?

Council of Trent was held in northern Italy in the town of Trento held between 1545 and 1563. It was the 19th ecumenical council of the Catholic Church.

Council of Trent addressed music in one sentence in all official documents, dealt as Holy Mass, towards the end of a 22nd session of the council.

They shall ban all kind of music from churches, in which, whether by the organ, or in the singing, there is mashed up of anything lascivious or impure, all secular actions, vain and therefore non religious or irrelevant talk, all walking about loud noise, that so the house of God may be seen to be called, a true house of prayer.