The Heptones are a Jamaican rocksteady and reggae vocal trio, most active during the 1960s and early 1970s. Consisting of Leroy Sibbles, Earl Morgan, and Barry Llewellyn, the group is known for their strong harmonies and socially conscious lyrics. Their signature sound, exemplified in influential songs like "Book of Rules" and "Fatty Fatty," combines soulful vocals with a slow, rhythmic beat, making them significant contributors to the development of reggae music. Despite various line-up changes, The Heptones continue to be recognized as one of Jamaica's most beloved and enduring groups.