The instrument consists of two strings on a fretless neck. A crank is affixed to a small nylon wheel mounted on the body. The player turns the crank, causing the wheel to spin and "bow" the strings. This concept is similar to that employed by the hurdy-gurdy. Unlike most hurdy-gurdies, Onoue's instrument has no keybox, but is fingered along the neck. This detail is similar to the strohfiddel, a hurdy-gurdy variant recorded by Michael Praetorius.

Sources

• Oddmusic.com: Kaisatsuko
• Onoue's official site