He has written and sung countless songs including several hits, and his fame and recognition spread all over South America[citation needed].

Through his career, Lerner played in different bands, formed his own group, and worked with international artists such as Luis Miguel, Paul Anka, and Celine Dion.

In 1974, he was discovered by Raúl Porchetto, who invited him[citation needed] to join a short-term project called Reino de Munt.

In addition, Alejandro Lerner was consolidating his skills as a performer while working with well-known Argentine singers Leon Gieco and Sandra Mihanovich[citation needed].

In 1998, Alejandor Lerner recorded the theme "Paths of the Soul" next to Kennedy Choir[2] and with more than 120 Argentine artists under the direction of Instrumental pianist and conductor Nazareno Andorno.