Melodías porteñas (Buenos Aires Melodies) is a 1937 Argentine film, a musical directed by Luis Moglia Barth, who also co-wrote it.

The director is worried about withdrawal of ads and falling profits, and throughout the film is looking for something exciting for listeners that will make the audience grow again.

[1] The character of the radio tango star, Alicia Reyles, played by Amanda Ledesma, is a modern woman who divorces her husband in Montevideo because she has a relationship with the station's most important sponsor, Aguirre.

[1] In parallel, the film tells the story of Juanita (Rosita Contreras), a girl from the interior who comes to Buenos Aires to try her luck with radio, but has little success.

One night Argüello, the announcer of Radio Moderna, finds Juanita in the street, decides to help her, and then they fall in love.

After returning to Argentine he designed sets for Alberto de Zavalía's Escala en la ciudad and for Luis Saslavsky's Crimen a las tres.

[6] The newspaper La Prensa praised the interpretive capacity of Discépolo in his role as director of the radio station, in which his grotesque performance is full of expression and vigour.

Sergio Pujol also refers to Discépolo's "grotesque technique" at the end of the film where his explanation of what he had done could be called an apocalyptic criticism of the radio medium, with the demand of its audience for sensation.