Here is Mitchell performing "Chelsea Morning" on The Dick Cavett Show - August 18, 1969:
Settling in Southern California, Mitchell and her popular songs like "Big Yellow Taxi" and "Woodstock" helped define an era and a generation. Her more starkly personal 1971 recording "Blue" has been called one of the best albums ever made.
Here is Mitchell performing "California" - a song from the album "Blue":
Musically restless, Mitchell switched labels and began moving toward jazz rhythms by way of lush pop textures on 1974's Court and Spark, her best-selling LP, featuring her radio hits "Help Me" and "Free Man in Paris."
Mitchell's wide-ranging vocals and her distinctive open-tuned guitar and piano compositions grew more harmonically and rhythmically complex as she explored jazz, melding it with her influences in rock n roll, R&B, classical music and non-western beats. Mitchell's experimental run of jazz-inspired albums, including 1975's The Hissing of Summer Lawns and 1976's Hejira, confused many and hurt Mitchell's sales at the time, but they are acclaimed today. In the late 1970s, she began working closely with noted jazz musicians, among them Jaco Pastorius, Wayne Shorter, Herbie Hancock, Pat Metheny and Charles Mingus, the latter of whom asked her to collaborate on his final recordings. In her later work Mitchell turned again toward pop, embraced electronic music, and engaged in political protest. Mitchell was also the sole record producer credited on most of her albums, including all her work in the 1970s. With roots in visual art, she designed her own album artwork throughout her career. A blunt critic of the music industry, Mitchell quit touring and released her 17th, and reportedly last, album of original songs in 2007. Now based in British Columbia, she describes herself as a "painter derailed by circumstance."
Mitchell has been deeply influential on fellow musicians in a diverse range of genres, and her work is highly respected by critics. Allmusic said, "When the dust settles, Joni Mitchell may stand as the most important and influential female recording artist of the late 20th century," and Rolling Stone called her "one of the greatest songwriters ever." I'm apt to agree. Mitchell's lyrics have been noted for their offhand poetic imagery, addressing social and environmental ideals alongside individual feelings of romantic longing, confusion, disillusion and joy.
Source - Wikipedia
For more info, visit Joni Mitchell's Official Website: http://jonimitchell.com/