 Because whole congregations would now all sing these psalms, unlike the trained choirs who had sung the many parts of polyphonic hymns, there was a need for simplicity and most church compositions were confined to homophonic settings.During his personal reign James VI attempted to revive the song schools, with an act of parliament passed in 1579, demanding that councils of the largest burghs set up "ane sang scuill with ane maister sufficient and able for insturctioun of the yowth in the said science of musik".Five new schools were opened within four years of the act coming into force, and by 1633 there were at least twenty-five.