The only animal (insect) who sings with a loud voice and the rhythm is not clear, that is he Insects "Gareng"
"Nyeeng ... nyeeng ..." loud voice that makes me surprised. I know exactly, it is sound one type of insects named "Gareng" in the language Aceh called "Deedeekhueng"
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This insect is rare we see even he only appears after the end of the rainy season. His voice is so loud even makes us have to close the ears. These insects make a sound to call the opposite sex, then they mate and lay their eggs. After they lay their eggs, usually these insects will die.
All photos above is my own shots using android camera.