[1] In 1959 they moved to Buenos Aires, and they were discovered and hired by Argentine record label RCA Victor in 1960.

Their first single was "Eso", which sold more than 100,000 copies in Argentina and became a success also in Mexico and most South American countries.

The second album, La Gira Triunfal por Latinoamérica de los TNT was published right after a tour through Venezuela, Colombia, Peru and Chile, in 1961.

In 1962 they moved to Spain to work with record label Belter, and in 1964 they were chosen by broadcaster TVE to represent the country (as Nelly, Tim & Tony) at the 9th Eurovision Song Contest in Copenhagen, Denmark.

In 1974, Nelly got married and dissolved the duo; meanwhile Tony Croatto continued to work as an entertainer in Puerto Rico until his death in 2005.