Unreleased (Columbia University 1973)

Unreleased (Columbia University 1973) is a live album by the Philadelphia-based jazz collective Sounds of Liberation. It was recorded during 1973 at Columbia University in New York City, and was initially released in 2018 in very limited quantities by Dogtown Records in conjunction with the Brewerytown Beats record store, after which it was made available with broader distribution the following year by both Dogtown and the Corbett vs. Dempsey label. The recording, which was thought to have been lost, features vibraphonist and band leader Khan Jamal, saxophonist Byard Lancaster, guitarist Monnette Sudler, electric bassist Billy Mills, drummer Dwight James, conga player Rashid Salim, and percussionist Omar Hill.

Unreleased was the group's second album, issued 46 years after the 1972 release of New Horizons. On June 13, 2019, the surviving members of Sounds of Liberation reunited for a concert/release party at Philadelphia's Union Transfer, sharing the bill with the Sun Ra Arkestra.