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 Man had created "Celtic Rock". The session was produced by Mickie Most and engineered by Eddie Kramer. Donovan had originally hoped Jimi Hendrix would play on the song, but he was unavailable. In fact, Donovan said he wanted to give the song to Hendrix for him to record, but that Mickie Most "flipped out" when he heard the song and insisted that Donovan should record it himself as his next single. The lyrics recount the tale of a nameless narrator being visited in his dreams by the eponymous "hurdy gurdy man" and his close associate, the "roly poly man", who come