A unique Jamaica musical concept  that began in the late 1940s and 1950s.  ‘Sound’ recorded music played at dance parties  held in houses, lawns, or dancehalls.  ‘System’ public address apparatus with turntables attached to it for sound reinforcement and the amplification of music which was played on huge wooden boxes with speakers inside. Sound systems are still a big part of the Jamaican music scene with many famous selectors aka DJs.