When he was 9, he sang the song "Sólo le pido a Dios" by León Gieco in Xuxa's TV program.

This song made him famous in 2000 when sang it for Pope John Paul II in the Vatican City, representing Latin America in the Jubilee Youth.

His first hit was called "Soy un inconsciente" (I'm reckless); this single eventually went quadruple platinum.

One year later, he was chosen to sing the Argentine National Anthem during the farewell match tribute to Diego Maradona.

In June 2002, Pereyra released his third album entitled Soy Tuyo (I'm yours) a disc that contains a bolero and tango influence.