In 1970, both Ipiña (for military service) and Panera (to become a professor at a local university) left Mocedades. Javier Garay who had previously belonged to Voces y Guitarras rejoined the group in 1970 after serving in the Spanish military in Africa. Estíbaliz Uranga and the Blanco brothers followed in 1971, and in 1972 Ipiña returned and Carlos Zubiaga (from Los Mitos) joined. It was with this configuration of six (three Uranga siblings, Zubiaga, Garay and Ipiña), known in Spain as "The Six Historic Ones", that Mocedades achieved its greatest successes.