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From #11903

On a more serious, ahem, note, let me ask you
whether a competent musician doesn't
_already_ use similar (if not identical)
techniques, albeit quite possibly unconsciously,
to alter the emotional states of his or her
listeners?

From # 11883

I'm not sure what subliminal sound would be, unless it's sound that
isn't heard consciously, but I certainly believe that sound affects
one's mood. I also believe that hearing intervals that have never been
heard before can elicit feelings that have never been felt before,
which
is one reason why I'm interested in microtonal music.

Responses must be at meta.

See link if desired:

/metatuning/topicId_10432.html#10432

Stephen Szpak