Born in Argentina, Soledad Cardoso began her education at the Municipal Lyceum of Santa Fe and subsequently completed her studies under the direction of Denise Dupleix. She has sucessfully competed in numerous opera and clasical music competitions receiving First Prize in many, including the Mozarteum of Santa Fe, Asociación Promociones Musicales of the National Fund for Arts, Pau Casals for Young Singers, and Banco Mayo Foundation. She also claimed Second Prize at the Manuel Ausensi International Competition (Spain, 2000) and First Mention at the Young Talent Competition of Art Channel. She has been awarded too at the International Singing Competition of Clermont-Ferrand (France, 2007). Soledad Cardoso recorded the first Argentinean opera composed for children and has performed with the most important orchestras of her country.  She has appeared on many prestigious stages, such as the French Club and the Salón Dorado of the Teatro Colón (Buenos Aires). She was given the Mozart Jubileo Tercer Milenium Award for her artistic merit and relocated to Spain for further training with the noted tenor Alfredo Kraus. There she received the distinction of remarkable student, a title delegated to her by Queen Sofía.  She continued her studies in Spain with Teresa Berganza and participated in master-classes with Renata Scotto, Ileana Cotrubas and Hakan Hagegard.
 

Soledad Cardoso made her professional debut in the Teatro de La Maestranza of Seville with Le Nozze di Figaro, where she has since returned to sing The Cunning Little Vixen. Her repertoire includes operas such as Die Zauberflöte, Arrieta's Marina, Falla's El Retablo de Maese Pedro, L'elisir d'amore and Le Nozze di Figaro in the Teatro Villamarta de Jerez, Auditorio de Tenerife, Auditorio de Galicia, Cádiz, Menorca and Teatro Campoamor de Oviedo with Alain Lombard, Víctor Pablo Pérez, E. García Asensio, Antoni Ros-Marbà and Paul Goodwin.

In the Teatro Real of Madrid, Soledad Cardoso appeared in Hidalgo's Celos aún del aire matan with P. L. Pizzi and J. C. Malgoire, as well as in Manon, Don Carlo, The Little Sweep, L'enfant et les sortilèges and Le Nozze di Figaro with A. Ros Marbà. At the Mozart Festival of La Coruña she sang Le Nozze di Figaro, Die Zauberflöte, Requiem, Exsultate, Jubilate, Haydn's L'anima del filosofo, Cavalli's Gli Amori d'Apollo e di Daphne, Sartorio’s Orfeo, and Handel’s La Resurrezione with Víctor Pablo Pérez, Jesús López Cobos, Alberto Zedda and Eduardo López Banzo.

Soledad Cardoso was invited to sing Scarlatti's Il Martirio di Santa Cecilia and Venere, Amore e Ragione, Perti's Oratorio della Passione, Galuppi's Confitebor tibi Domine and Dixit Dominus, and Handel's Il duello Amoroso with Gérard Lesne and Il Seminario Musicale, in the Ambronay's Festival, Champs Elysées (Paris), the Opera of Bordeaux, Festival de la Chaise-Dieu, Royaumont, Dijon, the Opera of Avignon, the Opera of Montpellier, Le Havre, Dardilly, Auch, Festival de Sablé-sur-Sarthe, Festival de Noirlac, Festival de Froville, Les Musicales du Lubéron, the National Opera of Rhin, Saint Pétersbourg and Utrecht.

She was selected by William Christie to take part of Le Jardin des Voix and joined the orchestra of Les Arts Florissants for a European concert tour, visiting prestigious concert halls and opera houses throughout Paris, Caen, Frankfurt, London, Lisbon, Madrid, Bilbao and Brussels. With W. Christie too, she sang L'incoronazione di Poppea in the Opera of Lyon.

Soledad Cardoso performed Haydn's Die Schöpfung with Anima Eterna and conductor, Jos van Immerseel, in Murcia, Salamanca, Paris, Lisbon and Brugge, as well as Bach's B minor Mass with the Bach Society of Holland and Jos van Veldhoven. She also appeared with José Miguel Moreno (Orphénica Lyra), Emilio Moreno (El Concierto Español, La Real Cámara), Raúl Mallavibarrena (Musica Ficta, Ensemble Fontegara), Fahmi Alqhai (Accademia del Piacere) and Eduardo López Banzo (Al Ayre Español), all programmes devoted to Spanish music of the XVIth, XVIIth and XVIIIth centuries, as well as Handel’s Gloria for soprano, duets from Acis, Galatea e Polifemo, Samson, Rodelinda, Orlando, etc., Boccherini’s Stabat Mater and Arie Accademiche, Bach’s Cantatas, etc.

She took part in a European tour of Anfossi’s La Finta Giardiniera with Antonio Florio and La Cappella de’Turchini, and sang Mozart’s Die Schuldigkeit des Ersten Gebots with Martin Haselböck and the Wiener Akademie in Austria. She was also invited to sing Poulenc's Gloria, Mozart's C minor Mass and Carmina Burana with the Académie de Musique des Grandes Écoles et Universités and the ensemble Choeurs et Orchestre du Palais Royal, in Paris.

Soledad Cardoso has appeared in many performances at the Auditorio Alfredo Kraus, Palacio de Festivales de Cantabria, Auditorio Nacional and Palacio de El Pardo (Spain) with conductors such as T. Vásáry, J. J. Olives and R. Frühbeck de Burgos. She recorded the Cuatro Madrigales Amatorios by Joaquín Rodrigo (Sony), Júpiter y Semele by Antonio Literes (Harmonia Mundi) and Gli amori d’Apollo e di Dafne by Cavalli (Naxos).

Highlights in the 2007/2008 season include Peter Grimes with Josep Pons in the Palau de la Musica de Valencia, Caldara’s La Passione with Antonio Florio in Italy and France, as well as Faure’s and Gounod’s Requiems in Clermont-Ferrand.