By imperceptibly mixing reality and fiction in an original narrative structure with great emotional impact, Cordón portrays the true story of a marimba musician who is touching in his tenacity and his ability to adapt. Since the ancient Guatemalan instrument's traditional use is in free-fall and the public wants rock, Don Alfonso turns his instrument to rock. The story presents a masterly mixture of drama and humor and becomes a paradigm of how the transformation of work is changing so many professions: "where the outcome is uncertain but maybe there are other ways to keep on living."