The Quarteto em Cy, the most important female vocal group of the MPB, was formed by the sisters Cyva, Cynara, Cybele, and Cylene. Coming to know VinÝcius de Moraes and Carlos Lira in the early '60s, they had their vocal group named by the two composers. They also did shows around Brazil and South America with VinÝcius de Moraes, Dorival Caymmi, Baden Powell, and Oscar Castro-Neves. In the historic festivals, they performed the "Samba do Crioulo Doido" (SÚrgio Porto), "Apelo" (Baden Powell/VinÝcius de Moraes), and "Pedro Pedreiro" (Chico Buarque de Hollanda). Some of their most important shows were Resistindo (over text by Aldir Blanc), Em Mil Kilohertz, Cobra de Vidro (with the MPB-4), and O Rio Amanheceu Cantando (with Elizete Cardoso). The quartet has had its records launched in Japan, Portugal, France, Spain, Chile, Mexico, Argentina, and the U.S.