Guaguancó is the most popular and influential rumba style. It is similar to yambú in most aspects, having derived from it, but it has a faster tempo. The term "guaguancó" originally referred to a narrative song style (coros de guaguancó) which emerged from the coros de clave of the late nineteenth and early twentieth centuries. Rogelio Martínez Furé states: “ old folks contend that strictly speaking, the guaguancó is the narrative." The term guaguancó itself may derive etimologically from the guagua instrument.