What is an otamatone?

Otamatone is a Japanese electronic musical instrument invented by Novmichi Tosa in 1998. It is a shape of a musical note and has a stem-like handle with a small "mouth" on the top. The player presses and slides their fingers along the stem to change the pitch and the volume of the sound. The instrument has a built-in speaker and can be connected to an amplifier or other sound devices. It is often used in musical performance, as well as in youtube videos and other online content. The Otamatone comes in various shapes, colors, and sizes, and has gained popularity in Japan, and internationally.