Plus 4 was originally released on Prestige in 1956 and features Sonny Rollins playing with the Cliff Brown/Max Roach Quintet. Described as a particularly strong hard bop set, the album contains five cuts, including two Rollins originals: "Pent-Up House" and one of his best-known pieces, "Valse Hot." This new edition of the album is released as part of the OJC Series on 180-gram vinyl pressed at RTI with all-analog mastering from the original tapes at Cohearent Audio and a Stoughton Tip-On Jacket.
