RSO Records was a record label formed by rock and roll and musical theatre impresario Robert Stigwood and record executive Al Coury in 1973. The letters "RSO" stood for the Robert Stigwood Organisation. By 1981, Stigwood had ended his involvement with the label, which was absorbed into PolyGram a few years later. All previous RSO releases were later re-released under the Polydor label, which is now owned by Universal Music Group. Reissues from Polydor are distributed in the U.S. by sister label Island Records.