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Angenor de Oliveira, better known as Cartola OMC (Rio de Janeiro, October 11, 1908 – Rio de Janeiro, November 30, 1980), was a Brazilian singer, composer, poet and guitarist. He is considered by several musicians and music critics as the greatest samba player in the history of Brazilian music. Having as its main hits the songs As Rosas não Falam, O Mundo É um Moinho and Alvorada.