String instrument strings, or play them by rolling the bell of a brass instrument such as a trombone on the array of strings. However, these are relatively rarely used special techniques. Other keyed string instruments, small enough for a strolling musician to play, include the plucked autoharp, the bowed nyckelharpa, and the hurdy-gurdy, which is played by cranking a rosined wheel. Steel-stringed instruments (such as the guitar, bass, violin, etc.) can be played using a magnetic field. An E-Bow is a small hand-held battery-powered device that magnetically excites the strings of an electric string instrument to provide a sustained, singing tone reminiscent
Hurdy Gurdy (film) term 'Hurdy Gurdy' is a "barrel organ". The film is recorded on Western Electric apparatus, which was an early sound-on-film recording system. This same system was also used on another Oswald short film entitled "Permanent Wave", which was released in the same year. Copyrighted on 3 January 1930, but released the year prior, the film was released by Universal Pictures. Thus, the film is part of the Universal series of Oswald The Lucky Rabbit films. The film opens with a bear (who is the street performer) using a barrel organ, and a monkey dancing to the music made by it.