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
Hållbus Totte Mattson that the hurdy-gurdy was the medieval equivalent of a synthesizer. In 2005, they released their first album under the name Hurdy-Gurdy, titled "Prototyp." The album consists of twelve traditional and original songs, played entirely on two Swedish hurdy-gurdies by Brisland-Ferner and Mattson. Specialized recording and computer editing techniques were used to produce a number of unique musical effects. Hållbus Totte Mattson Hållbus Totte Mattson (usually known simply as Totte Mattson) is a multi-instrumentalist folk musician from Dalarna, Sweden. Mattson's instruments include the lute, baroque lute, mandora, bass mandora, hummel, classical guitar, baroque guitar Mora-oud, accordion, Swedish dulcimer, hurdy-gurdy and vocals.