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 rolls, and more recently by electronic modules. The French call the barrel organ the "Orgue de Barbarie" ("Barbary organ"), while the Germans and Dutch say "Drehorgel" and "draaiorgel" ("turned organ"), instead of "Drehleier" ("turning lyre"). In Czech, the barrel organ is called "Flašinet". A person who plays the hurdy-gurdy is called a hurdy-gurdyist, or (particularly for players of French instruments) viellist. In France, a player is called un sonneur de vielle (literally: ""a sounder of vielle""), un vielleux or un vielleur. Because of the prominence of the French tradition, many instrument and performance terms used in English are commonly taken