The company has also had the privilege of being supported in benefit concerts or performances by such individuals as Tony Randall, Paul Sorvino, Luciano Pavarotti, Samuel Ramey, Gian Carlo Menotti, and Mirella Freni, among others.
He received his musical training at the Conservatoire de Musique de Genève and the Accademia d'arte lirica in Osimo, Italy, and perfected his vocal technique through further studies with Mario del Monaco and Ettore Campogalliani, who was also the teacher of Luciano Pavarotti, Mirella Freni, and Renata Tebaldi.
He went on to specialize in being a publicist for opera singers, helping shape and forward the careers of major stars like Lily Pons, Anna Moffo, Eleanor Steber, Jussi Björling, George London, Leonard Warren, Mirella Freni, Shirley Verrett, Cecilia Bartoli, Dolora Zajick, and Salvatore Licitra.
Monsalve started his vocal studies the 2001 in Viña del Mar at the Conservatory "Izidor Handler" and from the 2004 continued his studies in Italy learning the technique of Ettore Campogalliani, teacher of Renata Tebaldi, Luciano Pavarotti, Renata Scotto, Ferruccio Furlanetto, Ruggero Raimondi, and other big singers,and also with the soprano Mirella Freni.
Puccini - La bohème - Mirella Freni, Nicolai Gedda, Mariella Adani - Rome Opera Chorus and Orchestra, Thomas Schippers - EMI - (1963)
Giuseppe Sinopoli: "Only the baritone Renato Bruson has a similar ability to Mirella Freni) to make expression and word coincide, he explores it with all the semantic charge it contains. And this is not the result of an intellectual activity but is a privileged instinct".
Robert Kerns made relatively few recordings, the best known being Madama Butterfly, opposite Mirella Freni, Luciano Pavarotti, Christa Ludwig, under Herbert von Karajan.