James Jeffrey "Jeff" Plewman (March 26, 1948 – May 10, 2014), better known by his stage name Nash the Slash, was a Canadian musician. A multi-instrumentalist, he was known primarily for playing electric violin and mandolin, as well as harmonica, keyboards, glockenspiel, and other instruments (sometimes described as "devices" on album notes).Nash worked as a solo artist beginning in 1975; founding the progressive rock band FM in 1976.