The Caribbean music genre is composed of two distinct styles: Ska and Calypso. Ska is a genre of music that originated in Jamaica in the late 1950s, combining elements of Caribbean mento and calypso with American jazz and rhythm and blues. It is characterized by a walking bass line, accented guitar or piano rhythms, and horns. Calypso is a style of Afro-Caribbean music that originated in Trinidad and Tobago in the early 20th century. It is a fusion of African and European musical elements, and is characterized by improvised lyrics on topical issues and a call-and-response singing style.