You can use instruments to create a tone instead of your own voice, which should at least get around the hyperventilation problem. For example, if you have an e

You can use instruments to create a tone instead of your own voice, which should at least get around the hyperventilation problem. For example, if you have an electric toothbrush, you can modulate the sound it makes as it buzzes against your teeth by changing the shape of your oral cavity. (It seems to work better when the brush is held to your teeth, I guess the resonations carry better). For an actual musical instrument (OK, many will debate that point!), The Jew's harp uses the same principle as well. I recall hearing a legend of a Japanese player who'd lost all their teeth holding an ax to their chin and using that to get a resonation going. I'm not entirely sure how that was meant to work.