Photo of Douglas Sumi, M.M.

Douglas Sumi, M.M.

Adjunct Professor, Opera Music Director
Phone: (626) 815-3848
Douglas Sumi has served as assistant conductor under James Conlon, Plácido Domingo, Patrick Summers, William Lacy, Michele Mariotti, Stephen Lord, Grant Gershon and Emmanuel Villaume. In addition, he has served as a répétiteur and vocal coach at LA Opera and is an alumnus of the Domingo-Thornton Young Artist Program. Most notably, he assisted on LA Opera’s first full production of Wagner’s Der Ring des Nibelungen.

He has worked as an assistant conductor and coach for the Wolf Trap Opera Company, Indianapolis Opera, Centro Studi Lirica in Novafeltria, Italy, Ash Lawn Opera Festival, University of Minnesota and the Manhattan School of Music. He has also been invited to give masterclasses in Russia, at the St. Petersburg Conservatory, and Galina Vishnevskaya’s Opera Center in Moscow. A seasoned recitalist, Sumi has performed across the United States, Europe and Canada, spending time participating and coaching at various song programs and festivals.

While in New York, he studied with collaborative pianist, Warren Jones and was assistant coach to English diction expert Kathryn LaBouff. Currently he splits his time between Opera UCLA, APU Opera, and LA Opera, as well as spending his summers on faculty at Opera Works.


  • B.A., Piano Performance, Fresno Pacific University
  • M.M., Classical Accompanying, Manhattan School of Music


College of Music and the Arts

School of Music (College of Music and the Arts)


  • Art song
  • Diction
  • Opera
  • Voice

Courses Taught

  • MUS 104 – Elementary Piano Class
  • MUS 486 – Opera Workshop: Lead Roles and Minor Roles