Someone's un/subconscious might be aware of a sound that their conscious
mind hasn't noticed yet. I don't subscribe to the theory that
subconscious reactions can be measured by monitoring
breathing/heartrate/skin conductivity: those all presume that the
reaction is something unusual enough to change the person's
breathing/heartrate/skin conductivity. I think that if you grow up in a
typical urban environment, you get inured to a lot of sounds that would
startle or alarm someone who grew up in a quiet rural environment.
While being monitored as above, the city slicker might show no reaction
at all, while the country bumpkin might be at the top of the scale on
all of them.
The real interesting measure of perception/influence of music on thought
might require use of functional MRI scanning, which can show the actual
electrical activity in the brain.
> Coming back to Bach: If he was not interested in tunings he would not
There were plenty of tunings in Bach's day. If music over the centuries
had NOT settled on a standard tuning that essentially displaced the
others, would modern music have been experimenting with alternative tunings?