 The most important product of this tradition in Scotland was "The Gude and Godlie Ballatis" (1567), which were spiritual satires on popular ballads that have been commonly attributed to brothers James, John and Robert Wedderburn.Never adopted by the Kirk, they nevertheless remained popular and were reprinted from the 1540s to the 1620s.Later the Calvinism that came to dominate the Scottish Reformation was much more hostile to Catholic musical tradition and popular music, placing an emphasis on what was biblical, which meant the Psalms.