Castillo made numerous recordings with some of the leading folklorists of the New Chilean Song movement which included some of the most influential musicians in Latin America, including V*ctor Jara, Los Parras and Los Jaivas. Early on in his career Castillo began to collaborate musically with Victor Jara on many of his albums and they jointly composed a song that would go on to become one of Victor Jara's most famous songs Plegaria a un Labrador (Prayer to a labourer).
Castillo
Victor Jara