The Omar Rodriguez Lopez Group is the main side project of Omar Rodríguez-López. The group is most often a live entity to perform the various outlets of his solo music aside from The Mars Volta. His group began as Omar Rodriguez Lopez Quintet, formed in 2005 when he toured Europe to support his self-titled solo record. The quintet included three other members of The Mars Volta: Juan Alderete, Marcel Rodriguez-Lopez and Adrián Terrazas-González as well as Money Mark of Beastie Boys fame. Omar began this group with these members within only a year or two of them joining The Mars Volta.