She made her first appearance as a singer in 1993, singing with her mother in London. Following that, the mother and daughter sang together on a few occasions both on stage and on recordings.
In her early life, it was Vangelis who asked her mother if Martí also sang. It was the first time they sang together, and mother and daughter felt an emotional connection that lasted all their lives.
In 1998, Martí moved to Germany to begin her career as an opera singer. In the same year, she played the role of Zerlina in Mozart’s Don Giovanni at the Hamburg State Opera.
Martí has sung in various classical halls and opera houses worldwide, such as Gran Teatre del Liceu, Palau de la Música Catalana and Teatro Real in Spain; Bolshoi Theatre and Mariinsky Theatre in Russia; Deutsche Oper Berlin, Alte Oper, Musikhalle and Oper der Stadt Köln in Germany; Teatro alla Scala in Milan; Musikverein in Vienna; and the Royal Albert Hall in London.
Martí's repertoire includes roles in Leonard Bernstein’s West Side Story, Federico García Lorca’s La casa de Bernarda Alba, Jules Massenet‘s Cléopâtre and La Vierge; Mozart's Così fan tutte and Don Giovanni; and Puccini’s Edgar and Le Villi.
Martí has also collaborated in numerous charity concerts such as Rwanda in 1994 and in Prague for children with disabilities under the Olga Havel Foundation.