The 1st work for keyboard instruments; the 2nd for voices, guitar, percussion and electronics; the 3rd for narrator, piano, flute, clarinet, trumpet and electronics; the 4th for clarinet and electronics.
"La mazurca Aurora, integrada en [la cuarta] obra, es original del compositor puertorriqueña Ladislao Martínez (Ladí)"--Container.
Biographical and program notes in Spanish on container.
Elvira Giménez, o, Al otro lado de Tica (Vanessa Vasallo, keyboards) -- Cuidese de los Ángeles que Caen (Benigno Rosaloren and Luis Trigo Ferré, voices, objects ; Víctor Hugo Rodríguez, guitar) -- Streptomicyne (Julio Cortázar, narrator ; Vanessa Vasallo, piano ; Miguel Besosa, flute ; Genesio Riboldi, clarinet ; Orlando Cora, trumpet) -- Los huevos de Pandora (Genesio Riboldi, clarinet)