Their song reminds me a whip-poor-will bird
which I associate fondly with warm summer evenings from my childhood.
I had the pleasure of hearing coquis in Hilo, on the Big Island. The climate there is pretty much that of a rainforest, so I fell asleep on those two nights listening to the sound of the rain intermingled with the coquis.
Now that I'm back in Canada, I'm grateful that other similarly-entranced Hawaii tourists have posted recordings on YouTube.