Charlie Haden: Liberation Music Orchestra (Impulse!)

Liberation Music Orchestra is a band and jazz album by Charlie Haden released in 1970, Haden's first as a band leader.

The inspiration for the album came when Haden heard songs from the Spanish Civil War. He included three of those songs on the album (the trilogy "El Quinto Regimiento", "Los Cuatro Generales", and "Viva la Quince Brigada", which are old Spanish folk songs given new words during the war, in that order "El Vito", previously adapted by John Coltrane as “Olé", "Los Cuatro Muleros", for which Federico García Lorca also wrote lyrics, and "Ay Carmela").

https://en.wikipedia.org/wiki/Liberation_Music_Orchestra_(album)