 In June 1968 Los Ángeles Negros won La Discusión radio station's competition, in which they competed against a band named Los Cangrejo, and received the opportunity to record a single in Sello Indis, an independent label owned by pianist Raúl Lara. They recorded "Porque Te Quiero" / "Día Sin Sol", which was released by Indis as a single.
