From Wikipedia: "Tonto's Expanding Head Band was a British-American electronic music duo consisting of Malcolm Cecil and Robert Margouleff. Despite releasing only two albums in the early 1970s, the duo were (and still remain) influential because of their session and production work for other musicians (most notably Stevie Wonder." One year after this album, Stevie Wonder walks into their studie and makes history. If you've stumbled on this piece of music history, listen carefully.