Hurdy-gurdy Hurdy-gurdy The hurdy-gurdy is a stringed instrument that produces sound by a hand crank-turned, rosined wheel rubbing against the strings. The wheel functions much like a violin bow, and single notes played on the instrument sound similar to those of a violin. Melodies are played on a keyboard that presses "tangents"—small wedges, typically made of wood—against one or more of the strings to change their pitch. Like most other acoustic stringed instruments, it has a sound board and hollow cavity to make the vibration of the strings audible. Most hurdy-gurdies have multiple drone strings, which give a constant pitch accompaniment
Kaisatsuko also developed a 24-TET quarter tone tuning on his guitar as well as a deeply scaloped electric guitar for microtonal playing techniques. Kaisatsuko The kaisatsuko (Japanese: 回擦胡, literally "wheel-bowed fiddle") is a mechanical experimental musical instrument invented by Yuichi Onoue of Tokyo, Japan. 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