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
Music of Galicia, Cantabria and Asturias until recent years. Modern guitarists like Xesús Pimentel often use strong flamenco influences in their sound. The violin has a long tradition in the area, common since the early 20th century, when blind fiddlers traveled to fairs to play traditional and self-composed songs, as well as pieces by composers like Sarasate. The hurdy gurdy ("zanfona") has been played in the area for many centuries, but had mostly died out by the middle of the 20th century before being revived by Faustino Santalices, Xosé Lois Rivas and the like. Though the instrument is now more closely associated with French music, the