Continuing the musical exploration into Joni's jazz-inflected sounds, this set features unreleased studio sessions and alternate versions of hit tracks from the groundbreaking albums 'Hejira', 'Don Juan's Reckless Daughter', 'Mingus' and 'Shadows and Light', coupled with rare photos from the era. Packaged in a similar vein to previous sets in the series, Vol. 4 also includes notes taken from Joni in conversation with friend and confidante, Cameron Crowe. This comprehensive and essential set spans one of the most prolific periods of her storied career. It boasts powerful live tracks from her time in Bob Dylan's Rolling Thunder Revue during 1975 and 1976 Tour of the United States. It pulls back the curtain on the music by showcasing early recordings and alternate takes from the respective sessions for 'Hejira', 'Don Juan's Reckless Daughter', and 'Mingus'. It covers the Bread & Roses Festival as well as the Anti-Nuclear Rally. Finally, Vol. 4 chronicles her 1979 tour, even showcasing two tracks from that year's Tour Rehearsals.