different frequencies already promote different emotional reactions in people.
music is already scientifically known to trigger certain reactions in the brain (eg. dopamine and seratonin receptors). although a lot of how we interpret music is culturally dependent, there are certain elements of music which are hardwired into our brains (such as our interpretation and appreciation of rhythm).
not talking mumbo jumbo but music already causes an emotional reaction in people. that is one of the main characteristics of which constitutes quality (according to a lot of critics anyway).
I can listen to a single sound from Sonic the Hedgehog, Golden Axe or Streets of Rage and I am instantly enveloped by a wave of nostalgia.
but basically you would want to artificially "force" certain emotional reactions onto people whilst they are listening to music (you could argue that the majority of EDM is already based on this premise as nearly every single genre revolves around the partaking of one particular substance, which accordingly affects the music).
in that scenario the "drug" (or artificial high) becomes the main attraction and the music is simply background noise.