The sound of a tropical night made by a Cricket.
Adult crickets spend their days in shallow burrows beneath a stone, clod of dirt or a tuft of plant. They are most active during the night, and that is when males begin their nightly serenading to attract female mates.
A male cricket has a heavy vein with a row of teeth on the underside at the front of each wing. (open the photo then you can see the teeth better)
The top of one wing was used as a scraper against the underside of the other wing, like a fingernail drawn along the teeth of a comb.
This performance occurs with both wings elevated so that the wing membranes can act as sounding boards. The pitch of the chirps is slightly higher than the highest octave on a piano.
Air temperature influences chirping rates; the warmer the night, the faster they chirp. There are special songs for courtship, fighting, and sounding an alarm
Females don't stridulate, or rub special body structures together.
I never knew this before even though I am from the tropics.