Learn about the chirping of a cricket (Korogi) in 90 seconds

In the fall crickets chirp incessantly in the grass. Can you tell the chirping of a cricket from other insects? Learn about crickets just in 90 seconds!
065 Learn how to generate profit in 90 seconds
141 Understand difference between RGB and CMYK in 90 sec
Shoko en2 square Learn how to shoko (offer incense) in 90 seconds
Teaen Learn Japanese tea ceremony etiquette for guests in 90 seconds