(April 21, 1904 - October 2, 1990). For a great number, it was the largest singer of tango. Its voice of mezzo-soprano, its impeccable diction and its root of true ' tanguera' made of it preferred radios, although it did not record much.

Mercedes Simone was one of the protagonists of the great history of the Tango, and its interpretations remain today a model for rising generation of singers of tango.