Just thought that I'd through my 2-cents worth in.
First, Bach and Beethoven and Mozart, et. al. did not write classical music. They wrote contemporary music. Bach was constantly being chastised for including too much opera type things in his Cantatas and Oratorios. He also regularly dedicated his music, whether for the Church or for entertainment for the Royal Court, to the Glory of God. He would begin a piece with "JJ", which means "with Jesus' Help" and end it with "SDG" -- "To God's Glory Alone".
Martin Luther, in 1500's regularly borrowed secular "popular" tunes that were familiar to his people for his hymns. If you were to run into a version of "A Mighty Fortress Is Our God" based on the original rhythm used in his time you would hear that it is very syncopated and rather "jazzy", and easier to sing -- not the straight laced rhythm that we are most familiar with.
I have difficulty seeing that there are any combinations of notes or of rhythms that in and of themselves are sacred or secular. As with all of things that God created (which is everything) it depends upon the purposes for which we use them.
The atom and the way it works was created by God. It has the power to do remarkable things. It also has the power to destroy. These uses come from human decisions. The atom, in and of itself is not evil.
That's enough of my rambling for the moment.