At that moment of the group, the voices of the only two male members of the group were confused with those of the female members due to their young age. Because of this, the producers considered the idea of integrating a third male member into the group. The chosen one was Erik Rubín, who joins the band in December 1983. The band launches its fourth disc, titled Timbiriche Disco Ruido. The album was the first big challenge of the band, because it was not known what the public reaction would be to the new member, who had to go through many conflicts to adapt with his peers. However, the album had a good reception and contained hits such as "Disco ruido" and "Adiós a la escuela".