Born in Venezuela, he studied Baroque singing with Gemma Bertagnolli, Teresa Chirico and Alessandro Quarta, Gregorian semiology with Alberto Turco and vocal chamber music with Anthony Rooley and Evelyn Tubb at the Schola Cantorum Basiliensis.

He sings regularly as a high tenor/haute-contre with conductors such as Rinaldo Alessandrini, Alessandro Quarta, Ketil Haugsand, Francesco Cera, Patrizia Bovi, Jörg-Andreas Bötticher, Claudio Astronio, Georg Dücker, Walter Testolin, Michele Pasotti, Michele Vannelli and Stephen Smith, and alongside ensembles including Concerto Italiano, Concerto Romano, Theresia Baroque Orchestra, the Ensemble Arte Musica, the Ensemble Micrologus, Concerto Ibérico, Il Canto d’Orfeo, La fonte musica, the Ensemble Corund, De Labyrintho and RossoPorpora Ensemble.

His repertoire is mainly focused on alto roles of the Italian 1600s including Monteverdi, Cavalli, Cesti, and Stradella, the French haute-contre roles of the 17th and 18th centuries with works from Lully, Charpentier and Rameau, and the 18th-century tenor roles by Handel, Vivaldi and Jommelli, as well as the Bach Evangelists.

Andrés Montilla-Acurero has performed at some of the most prestigious venues and festivals such as the Berliner Philharmonie, the Musikkens Hus at the Aalborg Opera Festival, the Konzerthaus in Vienna, L’Auditori in Barcelona, the Kölner Philharmonie, the Melbourne Recital Centre, the Philharmonie Luxembourg, the Perth Concert Hall, the Hong Kong Cultural Centre, the Shanghai Symphony Orchestra Hall, the Beijing NCPA, the Kanagawa Ongakudo Hall, the Boston Early Music Festival, the Monteverdi Festival Cremona, the Teatro Comunale in Ferrara, the Teatro Verdi in Pisa, the Copenhagen Renaissance Music Festival, the Roma Festival Barocco, the Printemps des Arts Festival of Monte-Carlo, and the Festival del Centro Histórico in Mexico City, among many others.