This dance derives, according to research by the folklorist Fradique Lizardo, several Dominican popular rhythms. One of the most widespread is the Música de palos (Music of sticks), name that designates both the pace and the membranophones used. National Rhythms with obvious African imprint are sarandunga, Música de Gagá (Ganga's music, arrived from Haiti), Baile de Palos (dance of Sticks), Música de Congos (Music of Congos), Cantos de Hacha (Songs of axe), "los congos", "la jaiba" (the crab), el "chenche matriculado" (the chenche enrolled), etc. The "salve", which in the words of the U.S. ethnomusicologist Martha Davis, is the most typical of the traditional Dominican genres, has two styles: one distinctly Spanish, amétrico and antiphonal, and another polyrhythmic, strongly hybridized between the Spanish and African styles. Among African instruments are the "los palos" (the sticks), "balsié", and the "gallumba".