This release presents the complete recorded collaborations of Chet Baker and Gerry Mulligan between 1952 and 1957. All of their piano-less quartets are here, including both their classic 1952-53 sessions and their 1957 Reunion LP, plus their recordings from the same 1957 sessions with the addition of singer Annie Ross. Also included on this set are their quintets with Lee Konitz, and the two Mulligan-Baker tentet sessions. These recordings were originally issued by the Pacific Jazz, Capitol, Fantasy and GNP labels. An interesting Mulligan trio session from the same period, and all of Baker and Mulligan's known performances from the 1955 Newport Jazz Festival complete this once in a lifetime package.