Joni Mitchell Archives, Vol. 4: The Asylum Years (1976-1980) Enjoy nearly 100 unreleased recordings tracing Joni's groundbreaking work from the birth of Hejira to her legendary collaborations with jazz luminaries on this 6-CD box set. Featuring newly unearthed demos and studio outtakes from the era, live tour recordings from '76 & '79, and studio session contributions from the likes of Charles Mingus and Herbie Hancock, plus a 36-page booklet of unpublished photos and liner notes in conversation with Cameron Crowe. Units Per Set: 6