If you add in consonants like in "la" and "dee" you're even closer to speaking with your mouth parts!
There are languages that can be whistled. Though it is unlikely they will start learning Mazatec right now, they could come up with a simple system containing words like "yes", "no", "that one" and so on.
There are languages that can be whistled. Though it is unlikely they will start learning Mazatec right now, they could come up with a simple system containing words like "yes", "no", "that one" and so on.