A new book by Rodney Stark delineates the progress in Western Civilization that originated in the rational theology of the church:
The Victory of Reason : How Christianity Led to Freedom, Capitalism, and Western Success
There is a long history of dispute between those inclined to enthusiasm and proponents of a more reasoned faith. Current trends in church music are in some ways similar to the era of American revivalism. Pietism has a respectable history, but combined with postmodern cultural premises, it is poses a threat to rational theology.
The following review provides an introduction to Stark's book: