Ms. Viera has made numerous appearances with such ensembles as One World Symphony and Les Goûts Réunis, Musica Antiqua New York, Bacchanalia Baroque Ensemble and the Americas Vocal Ensemble; is a regular guest on the Healing Music Ministry Concert Series at St. Jacobi's Lutheran Church in New York City; has been featured in opera and recital at the Amherst Early Music Festival under the direction of Andrew Lawrence-King; and has toured as a featured soloist with Piffaro, the Renaissance Band. As part of the first New York Early Music Celebration she performed the music of G. F. Sances and Francesca Caccini with the New York Continuo Collective, and with Ensemble Les Goûts-Réunis, where she was a featured soloist in works by M.A. Charpentier and Paolo Lorenzani. International appearances include a recital of French and Italian Baroque music under the direction of Paul O'Dette and Jean-Paul Fouchécourt at the Teatro Municipal in Vila Real, Portugal.

Ms. Viera's stage experience reflects a wide spectrum of genres. Equally at home in early and Baroque music, Classical operatic and twentieth-century works, her repertoire includes Belinda in Purcell's Dido and Aeneas, Adele in Die Fledermaus, Virtù and Valletto in Monteverdi's L'incoronazione di Poppea, Wanda in Yoav Gal's Venus in Furs, and First Fairy in Mendelssohn's A Midsummer Night's Dream. She has also been featured in Monteverdi's Il Ballo delle ingrate, and in Torrejón y Velasco's La Púrpura de la Rosa.

Ms. Viera's studies of early repertoire have been complimented by extensive training in various areas of performance practice, including Baroque gesture, early notation, and ornamentation. She is a native of New York City, holds a degree in English literature from Williams College, and is the co-founder of Colla Voce, a new ensemble dedicated to the historically-informed performance of Baroque vocal music.