Chilean band based on brothers Patricio, Sergio and Fernando González Morales, who in 1964 founded some folk-pop bands as Los Stereos, Shadows and Los Masters. When Pancho Sazo joined them in 1969, the band finally called themselves Congreso. Later some chilean important musicians as Joe Vasconcellos or Jaime Vivanco played on the band.

Latest line-up: Sergio Tilo González (composer, drums); Francisco Sazo (lyrics, vocals); Hugo Pirovich (flutes, percussion); Jaime Atenas (soprano & tenor saxophones); Sebastián Almarza (piano, keyboards); Raúl Aliaga (marimba, ethnic & electronic percussion); Jorge Campos (bass, vocals) and Jorge Abarca (sound).