>>33209963Oh, interesting topic!
So, for a start, psychoactive effects are quite common and have a lot of precedent in chuubanite applications, but for most of those cases, direct ingestion is required.
It's a somewhat controversial application, but in my opinion hypnosis through the use of chuubanite is plausible. Hypnosis only requires specific audio-visual inputs, which chuubanite is able to create. In this instance, lulling people to sleep through the use of a magically-enforced hypnotic resonant frequency seems plausible (The CIA tried shit like that a while back).
Another way would be for the chuubanite to have psychoactive effects, but only when activated in a certain way. For example, the assumption would be that the soldiers have ingested local chuubanite with the food and drink they found. Then, the frequencies created by the songstress resonates with the chuubanite so as to activate it and apply the psychoactive effects to the individuals.
The pure hypnosis method would be a lot more vulnerable to disruption in the focus of the target, to increased caution on the target's part, or to a particular willpower resulting in being more difficult to hypnotize.
The "song-activated psychoactive effect" method would be a lot more reliable and powerful, but requires chuubanite to have been applied to the target somehow.
I'm watching! What a cutie... 