His composition Anji was recorded by Bert Jansch on his album "Bert Jansch" and Simon (Paul Simon) & Garfunkel (Art Garfunkel) on their album "Sounds of Silence".
He was a virtuoso acoustic guitarist who was an important figure in Britain's folk music scene in the 1960s.
His mother was from South America and his father came from a remote Scottish island.
His music had a wide range of influences, including classical, jazz, Indian, and Arabic music. His job at the British Library gave him access to blues recordings which were also an influence.