He also appeared on the radio, where he made Felipe, who was the prototype of Buenos Aires nice man, creation of Miguel Coronatto Paz, who was so successful that years later was taken to television on Channel 13, where he shared screen with other great comedians as Tato Bores, Alberto Olmedo, Pepe Biondi, José Marrone, Carlos Balá, Dringue Farías, and Juan Carlos Altavista, among others.

[3] In the theater he made Cuando los duendes cazan perdices, then taken to the movies, and, behind the scenes, was astonished by the beauty of the young actress Malvina Pastorino whom he married.

This resounding success made him become the most representative figure of the golden age of Argentine cinema; which then became entrenched in the film that inaugurated the "hotel accommodation series of the sixties", which was Daniel Tinayre's La cigarra no es un bicho.

He died when he filmed the movie, My Family's Beautiful!, by Palito Ortega, where he worked alongside another great of the show, Niní Marshall.

Peruvian writer Mario Vargas Llosa, Nobel Prize for Literature in 2010, recalls Sandrini in a passage in his novel Who Killed Palomino Molero?