Have you lot seen many of these? They are called a cicada -
This is the dissonance that a lot of them make! - That dissonance that you lot ask heed on the video higher upwards is existent together with no I bring non turned the book up!
"They brand this audio past times flexing their tymbals, which are drum-like organs flora inwards their abdomens. Small muscles chop-chop delineate the tymbals inwards together with out of shape — similar a child's click-toy. The audio is intensified past times the cicada's generally hollow abdomen." i information from http://www.cicadamania.com/
These pictures are truly non the cicada, although I idea that they were initially!
http://www.cicadamania.com/
This is truly what they are - the peel which remains later the molting of the cicada!
We saw these on our trip to Ko Yao Noi.