Parker's first association with Brown ended when he was drafted in the mid-1960s. He was replaced in the band by Clyde Stubblefield and Jabo Starks. Parker rejoined the band in 1969, and appeared on the albumSex Machine. In 1970 Parker was part of the famous mutiny by the James Brown band. After leaving Brown, Parker went on to join his brother Maceo's band, Maceo & All the King's Men. He rejoined James Brown briefly in 1976, and played on Brown's hit single "Get Up Offa That Thing".