https://thenextweb.com/syndication/2019/10/05/orangutans-can-play-the-kazoo-heres-what-this-tells-us-about-speech-evolution/

A kazoo might seem a world away from the spoken word. But our ability to produce its buzzing, Donald Duck-like sound at will was key in us ever developing the ability to speak at all. And while our capacity for speech is unique, my colleague Robert Shumaker and I have used the novelty instrument to show that great apes aren’t far behind.

Speech is one of the defining marks of humanhood. It is the interface of our social and societal relationships, and the baton through which individuals and generations pass information and knowledge from one to the other. Yet, how our species – and our species alone – developed such a powerful method of communication remains unclear.