 In June 1968 Los Ángeles Negros won La <unk> radio station 's competition , in which they competed against a band named Los <unk> , and received the opportunity to record a single in <unk> 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 . 
