Greenwich Entertainment released the official trailer for the documentary “Gordon Lightfoot: If You Could Read My Mind” – an exploration into the career, music and influence of the Canadian musical icon. The documentary follows Lightfoot’s evolution from choirboy in rural Canada to troubled troubadour to international star with hits including “If You Could Read My Mind”, “Sundown”, “Carefree Highway”, and “Rainy Day People”. The film is expected to be released later this summer.