an Entity references as follows:
Samuel Robert "Bob" Gibson (November 16, 1931 – September 28, 1996) was an American folk singer and a key figure in the folk music revival in the late 1950s and early 1960s. His principal instruments were banjo and 12-string guitar. He introduced a then-unknown Joan Baez at the Newport Folk Festival of 1959. He produced a number of LPs in the decade from 1956 to 1965. His best known album, Gibson & Camp at the Gate of Horn, was released in 1961. His songs have been recorded by, among others, the Limeliters, Peter, Paul and Mary, Simon & Garfunkel, the Byrds, the Smothers Brothers, Phil Ochs, and the Kingston Trio. His career was interrupted by his addiction to drugs and alcohol. After getting sober he attempted a comeback in 1978, but the musical scene had changed and his traditional style