Last three quotes in Post #4 have undercurrents of divisiveness or condescension that you can do without.
Tom, do you know the Tom Stites who wrote the essay in Post #5? He's lived in KC off and on through the years. I used to work for him. He's possibly a former or current member of your congregation.
There's a quote from Schoenberg saying that all music begins its life as improvised music.
Dave Brubeck tells a story about being surprised to find that a film of his quartet had been incorporated into a military training film. The military's point, Brubeck says, is that in real-life military situations, you have to do like the guys in the quartet -- improvise, but improvise together!