The crossword solution for the term REGGAE'S RELATIVE is SKA, a three letter word. Ska is a music genre that originated in Jamaica in the late 1950s and is considered to be the precursor to reggae. It is characterized by a walking bass line, offbeat rhythms, and a mix of musical influences from jazz, rhythm and blues, and calypso. Ska has been popularized by bands such as The Specials, Madness, and The English Beat.