I would like to know whether it is common for music teacher instructors, and, perhaps, also with musical orchestra directors, but perhaps not, to introduce special sounds, in special ways, by means of some object, or even with their voice, to induce a pause in the instrument players or singers (and, whether, there are some sounds that will work in general to get the player or singer to pause, by inducing a blockage in their brain's functioning, with the sound, perhaps even in measured ways, maybe even with the player's or singer's cooperation, or whether it is just me).
Thank you for your suggestions.
It would be nice to see a few videos of examples of how people do this or how this is done in practice (if you know what I'm talking about).
Thanks.