Released in 1971, Joni Mitchell's Blue set the bar for "confessional" songwriting. In a big year for popular music, from Masters Of Reality to Teaser and the Firecat, It showed what could be done with a mountain dulcimer, acoustic guitar, piano, and voice. 54 years after the release of Blue, it continues to influence the most popular songwriters of the day. Songwriter and songwriting instructor, Susan Cattaneo shares some amazing insights into what makes Blue one of the most enduring recordings of the 20th century.