The official language is English. Saint Lucian French Creole (Kwéyòl), which is colloquially referred to as ''Patois'' ("Patwa"), is spoken by 95% of the population. This Antillean Creole is used in literature and music, and is gaining official acknowledgement. As it developed during the early period of French colonisation, the creole is derived chiefly from French and the West African languages, with some vocabulary from the Island Carib language and other sources. Antillean Creole is also spoken in Dominica, Martinique, Guadeloupe, and (to a lesser extent) St. Vincent and Grenada; it also resembles the creoles spoken in French Guiana, Haiti, Mauritius and the Seychelles. Saint Lucia is a member of ''La Francophonie''.