click through for full text of an article published in Ladies Home Journal, August 1921.
Written by Anne Shaw Faulkner, head of the Music Department of the General Federation of Women's Clubs.
some highlights:
Still another proof that jazz is recognized as producing an evil effect is the fact that in almost every big industry where music has been instituted it has been found necessary to discontinue jazz because of its demoralizing effect upon the workers. This was noticed in an unsteadiness and lack of evenness in the workmanship of the product after a period when the workmen had indulged in jazz music...
The human organism responds to musical vibrations. This fact is universally recognized. What instincts then are aroused by jazz? Certainly not deeds of valor or martial courage, for all marches and patriotic hymns are of regular rhythm and simple harmony; decidedly not contentment or serenity, for the songs of home and the love of native land are all of the simplest melody and harmony with noticeably regular rhythm. Jazz disorganizes all regular laws and order; it stimulates to extreme deeds, to a breaking away from all rules and conventions; it is harmful and dangerous, and its influence is wholly bad.
A number of scientific men who have been working on experiments in musico-therapy with the insane, declare that while regular rhythms and simple tones produce a quieting effect on the brain of even a violent patient, the effect of jazz on the normal brain produces an atrophied condition on the brain cells of conception, until very frequently those under the demoralizing influence of the persistent use of syncopation, combined with inharmonic partial tones, are actually incapable of distinguishing between good and evil, right and wrong.