on of Juan Manuel Sánchez and Bárbara Morgan. He was born in the city of Junín, province of Buenos Aires. When he was a child his family moved to the province of Córdoba.

When he was only fourteen he began to sing in the group led by Edmundo Suárez. Later in 1944 he was hired by the orchestra fronted by Francisco Plano in Rosario. Because of that he was based in that city of the province of Santa Fe.

Thereafter he came to Buenos Aires where he was summoned by Nicolás D’Alessandro, switching later to the aggregation led by the bass player Tito Martín. Before that he had short tenure in the group of the bandoneonist Francisco Grillo.

In 1951 he returned to Rosario where he stayed for a year to later move to Córdoba for a season.

In 1953 and until 1955 he appeared on LR3 Radio Belgrano where he was in one of the most successful radio programs: La Gran Audición Federal which aired outstanding national and foreign figures. Furthermore he was summoned by the Odeon record company and cut a recording with the tango "El Tigre Millán".

In the late 1955 the bandoneonist Jorge Caldara returned from Japan and put together his own orchestra and asked Raúl and Carlos Montalvo to join it. The leader had been member of the aggregation that backed up Ranko Fujisawa in Japan.

The orchestra first appeared on Radio Belgrano and later on Splendid. By that time his first recording with Caldara took place: "Ruega por nosotros". The number was written by Fuentes and Cervantes and was sung by the two singers and, on the other side, with only Ledesma on vocals: "Su nombre era Margot" written by Ángel Cabral.

In July 1957 Ledesma recorded his last disc with this orchestra and, like in the first one, also in a duo with Montalvo, the milonga "La fulana" and he alone, the tango composed by the bandleader with lyrics by Abel Aznar, "No ves que nos queremos".

By the end of the year he joined the Juan Sánchez Gorio’s orchestra along with the singer Julio Fontana. They substituted for the vocalists Luis Mendoza and Osvaldo Bazán. His tenure in this aggregation was short.

After the carnival balls of 1958 he joined the Miguel Caló Orchestra to replace Roberto Mancini. Soon thereafter, on April 15, 1958 he recorded the Carlos Briz’s number "Encadenados" arranged as a tango by the pianist Orlando Trípodi.

In November that same year he recorded the Cristóbal Herreros’s number "Un tango para la historia" and the piece written by Fernando Tell and Guillermo Guillén, "Frenético". He also recorded "Cuando rondan los recuerdos" written by Tito Ferrari and Alberto Coria and "Madre de los cabellos de plata" by Juan Solano Pedrero and Alejo Montoro.

By the end of the year Caló made a short break and Ledesma returned to the spotlight as soloist. Later he began a long tour throughout the interior of the country.

In 1965 he joined the group of the pianist Enrique Mora and in July he recorded "Confesión" on a 33 rpm double disc. The rest of the numbers were the instrumentals: "El once", "Fascinación" and "Fuegos artificiales".

Two years later he again joined Caló and was at the recording session of a long playing disc that included: "Garras", "Así era ella muchachos" (by José Cabodevila and Ángel Di Rosa), "Sabor de Buenos Aires” (by Miguel Caló and Carlos Mastronardi) and "Aquel viejo tango", (by Antonio Arcieri and Ángel Danesi, with words by Roberto Jiménez, Francisco Bohigas and Luis Derry).
As from the seventies the appearances of this good singer with a baritone-like voice, expressive, with a deep tango sensitivity would continue with shows and tours accompanied by the sextet of the great bandoneon player Nicolás Paracino. With the latter he recorded an excellent long-playing disc.