Calypso drew upon African and French influences, and became the voice of the people. It was characterized by highly rhythmic and harmonic vocals, which was most often sung in a French creole and led by a griot. As calypso developed, the role of the griot (originally a similar traveling musician in West Africa) became known as a chantuelle and eventually, calypsonian. As English replaced "patois" (Antillean creole) as the dominant language, calypso migrated into English, and in so doing it attracted more attention from the government. It allowed the masses to challenge the doings of the unelected Governor and Legislative Council, and the elected town councils of Port of Spain and San Fernando. Calypso continued to play an important role in political expression, and also served to document the history of Venezuela and Trinidad and Tobago.