When you slow the cricket song down, it's singing. In perfect keys and harmonies. Though it sounds like human voices, everything you hear is the crickets themselves.
Enjoy.
https://yeshuafreedom.com/w/3vBd8y11FyF26VrWFxv33R
https://yeshuafreedom.com/w/1fUM5pg6yYKQezPhABe1N2
