Mitchell owns Piper Artists Management, one of the leading artist management firms in the world today. Piper Artists provides world-wide representation to a select group of classical singers and conductors that are regularly engaged by the world’s leading international opera, and concert halls. Mitchell is currently the President of Opera Managers Association International, the largest association of opera managers in the world today which includes prominent artist managers from around the globe and is organized in Frankfurt, Germany.
Mitchell dedicates a great deal of time to helping establish young singers in the opera profession and has presented master classes and career consultations for young artists at the Washington National Opera, Virginia Opera, Connecticut Opera, Lyric Opera of Kansas City, the Manhattan School of Music, Cincinnati Conservatory of Music, Academy of Vocal Arts, The Juilliard School, New York University, and The Hartt School. His past teaching positions include Chairman of Graduate Opera at The Hartt School, and Visiting Professor for the Steinhardt School at New York University. His students have successfully competed in the McCalister Awards, Loren L. Zachary Competition, the Metropolitan Opera National Council Awards, and have been accepted into Young Artist Programs with the Houston Grand Opera, Lyric Opera of Chicago, Metropolitan Opera, Chautauqua Opera, Central City Opera, and the Santa Fe Opera.
As a performing artist, Mitchell made his professional debut with the Connecticut Opera in Mozart’s Die Zauberflöte. He has appeared in leading roles in Carmen, Ariadne auf Naxos, Fidelio, I Pagliacci, Salome, and Susannah in both the US and Europe. He performed extensively in concert including performances with the late Robert Shaw, Beethoven’s Ninth Symphony at Avery Fisher Hall with conductor Yehudi Menuhin, and Mozart’s Missa Brevis, in association with the Mozart Bicentennial at Lincoln Center.