Watch caterpillars "dancing" in sync

I had no idea that caterpillars responded to sound by moving their bodies like this.

The caterpillars do this as a survival tactic: " caterpillars writhe their bodies and shake their heads when they hear loud sounds because they are warding off potential attacks from parasite flies.". I love how they synchronize their movement each time they react to a sound.

I want to see how they'd react to a song playing on a speaker!