Opus Cuatro

Argentinian folk band founded in La Plata in 1968. First line-up comprised Alberto Hassán (first tenor vocals), Antonio Bugallo (second tenor), Lino Bugallo (baritone) and Federico Galiana (bass). In 1972 Aníbal Bresco replaced A. Bugallo, and in 1974 Hernando Irahola replaced L. Bugallo. More personnal changes followed along time, but still they are in active.