César Isella was an Argentinian singer and songwriter of folk music. He joined Los Fronterizos from 1956 to 1966, was one of the main figures of the "Movement of the New Songbook", and in the 1990s he discovered and sponsored the singer Soledad Pastorutti. He has written the music for "Canción con todos", regarded as the Latin American anthem.

Soledad "La Sole" Pastorutti is an Argentine folk singer, who brought the genre to the younger generations at the end of the 20th century, and the beginning of the 21st.