Joni Mitchell was at a turning point 50 years ago. After making four acclaimed albums with Reprise Records, including her 1971 masterpiece Blue, she left the label to join the brand-new Asylum Records in 1972. Over the next seven years, Mitchell would record some of the most acclaimed music of her career while changing her musical direction by adding more jazz elements into her songwriting. The evolution culminated in 1979 with Mingus, her collaboration with jazz titan Charles Mingus, and her studio last album for Asylum.