The new Willie Nelson album, titled December Day, is the first installment of a new series of archival recordings called Willie’s Stash. Personally curated by Willie Nelson, the Willie’s Stash series will present a variety of releases, culled from decades of recording and touring. A singular career that’s established Willie Nelson as an American musical icon.

Produced by Buddy Cannon and augmented by contributions from other Family Band members, the album is a collaboration between Willie Nelson and his sister, Sister Bobbie. December Day showcases 18 unreleased selections from the Willie Nelson Family Songbook, including new versions of gems from Willie’s extensive songwriting catalog (“Permanently Lonely,” “My Old Peculiar Way”) alongside some surprising cover tunes (Al Jolson’s “The Anniversary Song,” Irving Berlin’s “Alexander’s Ragtime Band,” “What’ll I Do” and “Always”).

Musicians on the album include Willie Nelson (Trigger) and Bobbie Nelson (piano, B-3 organ) with Mickey Raphael (harmonica), Kevin Smith (bass), Bee Spears (bass), Billy English (drums, percussion) and David Zettner (acoustic guitar). Bobbie has been an essential member of Willie’s Family Band since its official formation in 1973. Willie and Bobbie’s deeply intuitive musical bond, formed and developed through of decades of practice and spontaneity, can be felt throughout December Day.