This group may not be new to you, but it was to me. Start this video and close your eyes. What do you hear? Now open your eyes. Is that fun or what?
Many years ago a regional chorus of PA sang a song that had something similar in it, but it was the audience who did it. In the program were listed some names of soldiers who had been killed in Vietnam. The audience was to quietly whisper that list of names in whatever pace they wished. The conductor directed them to do so very quietly. The result was that it sounded for all the world like the sounds of the woods t night. You could hear the peepers, the crickets, and other sounds from the woods.
The lights on the stage were also dimmed a bit and the conductor allowed this sound enough time to create the atmosphere in the room. Then he led the chorus in the song about the fallen soldiers. It was haunting, for sure, and I've obviously never forgotten it.
In any case, send this to your favorite music teacher.