Derrick Morgan is one of the greats of Jamaican music, and the undisputed king of ska. But his recording career did not stop in 1967 when the sound of ska slowed down into rocksteady. Nor did it stop in 1968 when rocksteady evolved into the early sound of reggae. This set was first released in 1974, when reggae was king, under the name In the Mood, but the working title had been This Is Derrick Morgan. The working title follows the format by which the world of reggae would normally introduce a new singer with a showcase album. In this case, for the first reissue of this album, the working title is restored to reintroduce Derrick Morgan to the new reggae sound -- though an artist of Morgan's caliber really needs no introduction, as his voice works on any rhythm put his way. One of the greats of Jamaican music showing the world -- with the help of producer Bunny Lee -- that he can roll with the reggae sound.