Blue is the fourth studio album by Canadian singer-songwriter Joni Mitchell, released in June 1971.
Written and produced entirely by Mitchell, it was recorded in 1971 at A&M Studios in Hollywood, California. Created just after her breakup with Graham Nash and during an intense relationship with James Taylor, Blue explores various facets of relationships from love on "A Case of You" to insecurity on "This Flight Tonight".
The songs feature simple accompaniments on piano, guitar and Appalachian dulcimer. The album peaked at number 3 on the UK Albums Chart, number 9 on the Canadian RPM Albums Chart and number 15 on the Billboard 200.