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 (band) that rivalled The Jimi Hendrix Experience in their live performances. Otzen and Bøhling had to return to Denmark shortly after those recordings, as they were unable to secure work permits from the Musician's Union. A new bassist (Torben Forne) was recruited to replace MacLeod and, in early 1971, they released a self-titled album for CBS which has recently been reissued on CD. MacLeod briefly joined the post-Zombies group Argent. In 1993, Bøhling re-formed the band and performed two concerts at the Cavern Club in Exeter. Hurdy Gurdy (band) Hurdy Gurdy emerged from the Danish group "Peter Belli and the Boom