Gregory Anthony Isaacs is a Jamaican reggae musician. Milo Miles (writer in the New York Times) cited Isaacs as "the most exquisite vocalist in reggae". His also known as Cool Ruler and Lonely Lover.
During his teenage time, he became a old timer of the talent search that constantly taking place in Jamaica. Isaacs made his recording debut in 1968 with a duet with Winston Sinclair in the song "Another Heartache" that was recorded by producer Byron Lee. This single become unsuccessful and he decide to go along with two other vocalists namely Penroe and Bramwell in the trio "The Concords" (that not last long) and it record for Rupie Edwards and Prince Buster. In 1970, the trio broke up and Isaacs begin his solo career. Originally it was self produce recordings and later he is recording for Edwards. Isaacs go along with another young singer in the name of Errol Dunkley to start the African Museum record label and shop. After sometime they had a major hit with the song "My Only Lover". It was considered as the first lovers rock record that was made. Isaacs doing other recordings for other producers to sustain the African Museum recordings which have a several hits with in three years that range from ballads to roots reggae which include hits such as "Lonely Soldier", "Black a Kill Black", "Extra Classic" and his cover version of Dobby Dobson's "Loving Pauper", "All I Have Is Love".