Together with Enrique Santos Discépolo, he authored such classics as "Uno" (1943), "Sin palabras" (1946) and "Cafetín de Buenos Aires" (1948). Mores and José María Contursi wrote "En esta tarde gris" (1941), "Tu piel de jazmín" (1941), "Grisel" (1942) and "Cristal" (1944). He co-wrote "La calesita" (1953) and "El patio de la morocha" (1951) with Cátulo Castillo, "Una lágrima tuya" (1949) with Homero Manzi and, "Cuartito Azul" (1939) with Mario Battistella.