The documentary follows the main stages of Janis Joplin’s life, from her performance at Monterey Pop in 1967 to Woodstock in 1969 and Festival Express in 1970, including interviews with relatives, friends and rock stars of her time. The soundtrack features Janis Joplin’s hits, among which Cry Baby, Mercedes Benz and Piece of My Heart. Amy Berg shows the woman behind the myth, o...…