After recording the influential album "Fictions" in the 1960s with Los Vidrios Quebrados, a true gem of early Chilean rock, Juan Mateo O'Brien didn't sing again for almost 50 years. "O'Brien: The Ages of Man" reveals the past, present, and future of one of the founders of creative rock in Chile, through fragments of a puzzle that intersects Santiago, Paris, revolution, exile, music, and words. A keen observer of the local psyche, O'Brien wanders through a constantly transforming city. With a central role for the songs from the album "Gran Avenida" - his celebrated recording comeback driven by a new generation - "O'Brien: The Ages of Man" is an unusual portrait of a particular protagonist of the 20th century, architect of his own destiny.