The New York Times has an interesting story about the sounds of Jurassic forests. Insect chirps, trills, and clicks make up a large part of the Earth’s modern soundscape. Recently, a group of researchers looked at fossilized insect wings from the Jurassic to determine the sounds they’d make 150 million years ago. The research paper was published in the Proceedings of the National Academy of Sciences.

This buzzy chorus contains the calls of nine species of prehistoric insects that an international team of scientists spent more than a decade reconstructing.

The insects, which are the relatives of modern-day crickets and grasshopper-like insects known as katydids, created sound by rubbing their wings together. By studying the fossilized wings of these ancient insects, as well as the bioacoustics of their living relatives, the researchers were able to use computer modeling and machine learning to replicate their calls.