Joni Mitchell's third album offers a bridge between the artful but sometimes dour meditations of her earlier work and the more mature, confessional revelations of the classics that would follow. Voice and guitar still hew to the pretty filigree of a folk poet, but there's the giggling rush of rock & roll freedom in "Big Yellow Taxi," and the formal metaphor of her older songs ("The Circle Game," already oft-covered by the time of this recording) yields to the more impressionistic images of the new ones ("Woodstock"). The dark lyricism of her earliest ballads is intact (on "For Free" and "Rainy Night House"), yet there's a prevailing idealism here that sounds poignant alongside the warier, more mature songs to come on Blue and Court And Spark. --Sam Sutherland