She has worked with notable conductors and has appeared as a guest soloist with many Orchestras in such works as Mahler’s Symphony No. 4, Beethoven's Mass in C, and the Brahms, Fauré and Mozart Requiems, to name a few. She has also received numerous awards from prominent vocal competitions, including the Gerda Lissner Opera Competition in New York, the MacAllister Opera Competition, the Metropolitan Opera National Council Auditions, the Jenny Lind Soprano Competition, the Rosa Ponselle Competition, the Giulio Gari Foundation Opera Competition and the Liederkranz Competition and was the first ever recipient of the Randolph "Randy" Mickelson Memorial Fund Award. De Trejo is also a recipient of a career grant from Career Bridges Foundation and the Sergio Franchi Foundation and was honored to be recommended for the Richard Tucker Career Grant Awards.
Elizabeth can be seen on the EMI Classics DVD of Der Rosenkavalier with Vasselina Kasarova, Nina Stemma, and Alfred Muff under the direction of Franz Welser-Möst and Sven Erich Bechtolf live from Opernhaus Zürich.Ms. De Trejo attended Loyola University, New Orleans, where she received a Bachelor's of Music in Performance and Yale University, receiving her Master of Music. After her studies, Ms. De Trejo joined the International Opera Studio of the Opernhaus Zürich. Elizabeth is now also a member of the executive board of the art song competition and organization, Joy In Singing Foundation, The Art Song Institute and additionally has an international training studio, Studio De Trejo, that focuses on the Bel Canto technique.