Third World were originally formed in 1973 by keyboardist Michael “Ibo” Cooper and guitarist/cellist Steven “Cat” Coore. Both had received formal training at music schools in Jamaica, and both had played around the Kingston reggae scene before joining the original lineup of Inner Circle around 1968.
When they left to form their own band (Third World) in 1973, they took Inner Circle bassist Richard Daley with them, and also recruited drummer Carl Barovier, percussionist Irvin “Carrot” Jarrett, and lead singer Milton “Prilly” Hamilton. Barovier was replaced by Cornell Marshall, and the group made its live debut that year at Jamaica’s independence celebration.
Third World Bio as stated on: http://www.allmusic.com/artist/third-world-mn0000494474/biography