So far in the thread we've seen how different musical styles were used to communicate sentiments alien to the original intended purpose. It's quite common though for a newly invented instrument to be used in a very different way from what its designer imagined. Early electronic devices were made to emulate other instruments, for instance when the shawm player didn't turn up for rehearsal the settings could be adjusted to sound like a shawm and someone else could play the shawm part. What actually happened though, is that weird psychedelic sounds could be made as unlike anything previously possible as you could get.
The Hammond organ is another example. How it finished up being used, in the blues and the jazz and the rock & roll, was very innovative and turned it into a whole new class of instrument. Electric guitar? Same. Both now have extensive repertoires unique to themselves. When samplers came out, again they could be used as the manufacturers imagined but they could also do other things well outside anything envisaged at the design stage and pushing the boundaries into whole new musical genres. Adapting and innovation had always been a part of music.
Demons combine subtle cues in similarly innovative ways. How often have you heard a "catchy" tune but for some reason felt uneasy? There will have been a little quirk slipped in. The subtle grace note, a slightly different tuning – and you're undone. Before long it's magic crystals, new-age amulets, hippie art festivals and all because of a catchy tune. It could even be a well-known piece, a novel twist thrown in: "How is he doing that?" and you investigate. Lutherans, opposed to Rome in every way, produced some great music. So did medieval minstrels. Now though, repurposed contraptions are wheeled out and used by wiccans and by Rome to play new stuff suited to their respective agendas. But it's the same agenda really, isn't it. Satan's agenda. Be very wary when you see these things promoted. It's another way for Christians to successfully detect demonic music.