Since I'm in this mood now, it is a good chance to do a short introduction to folk and country music genres which can be combined with protest songs. One great musician of the folk scene is Eric Andersen. 'Sheila' is a song included in his album "Blue River" released in February 1972, and it is regarded as a landmark recording for the Singer-Songwriter/Folk rock genre. Guest musician Joni Mitchell contibutes vocals on the title track 'Blue River'.
Eric Andersen (born February 14, 1943, Pittsburgh, Pennsylvania) is an American singer-songwriter. In the early 1960s, Eric Andersen was part of the Greenwich Village folk scene in New York. His best-known songs from that time are 'Violets of Dawn', 'Come to My Bedside', and the anti-war 'Thirsty Boots' (the latter recorded by Judy Collins, amongst others).