Around which point in time was the rejection of post-WWII modernism and a return to more familiar musical values in full swing?

What were three prominent movements in the 1950s and 60s that rejected the past while searching for new means of expression?

What will be an ideal response?

The French _____ argued that society could improve by applying reason to problems

A) ?philosophes B) ?naturalists C) ?clergy D) ?satirists