Kaiso is a type of music popular in Trinidad, and other islands of the Caribbean, such as Grenada, Barbados, St. Lucia and Dominica, which originated in West Africa, and later evolved into calypso music.Kaiso music has its origins in West Africa (particularly in present day Nigeria) and was brought over by the slaves who (in the early history of the art form) used it to sing about their masters. The people would also gather in "kaiso" tents where a "Chantwell" or lead singer would lead them in song, originally in a French creole. Kaiso songs are generally narrative in form and often have a cleverly concealed political subtext. Kaiso performers are known as Kaisonians.In Barbados, kaiso refers to a form of stage-presented calypso, such as at the crop over festival.TerminologyThe term kaiso is said to derive from a Hausa word used as an exclamation of approval, such as "Bravo!" The word is often used synonymously with calypso today, but often with the connotation that the former is more authentic, showing approval consistent with its original meaning.