• Production still from SERSE
  • french horns
  • choir and orchestra
  • pianist, clarinetist, and violinist
  • violin section of orchestra
  • wind orchestra
  • Jazz Band on stage

Jahyeong (Jackie) Koo

Jahyeong Koo
(818) 677-3163
Office location:
CY 201


A graduate of the Sun-Hwa Performing Arts School in Seoul, Korea, Ms. Koo received her B.M. and M.M. Degrees from the University of Northern Iowa in piano performance, along with an enrollment as a doctoral candidate at USC with an Accompanying Assistantship.

Ms. Koo presently serves as the staff accompanist for the California State University, Northridge, as well as being the founder and manager of the Valley Philharmonic Youth Orchestra.

Ms. Koo has won numerous piano competitions and awards both as a solo artist and as an accompanist throughout the United States, Europe, and Asia. Having been invited to perform with the Moscow Philharmonic Orchestra in Russia and the Razgrad Philharmonic Orchestra in Bulgaria, Ms. Koo also performed with the LA TRIO and taught Master Classes in China, as well as performing for the International Clarinet Festival in Japan and serving as resident accompanist for the International Clarinet and Saxophone Festival in Beijing in 2007 and Chongqing, China in 2015.

California State University, Los Angeles, Adjunct Professor of Music from 2004-2009, Ms. Koo is a member of the MTNA and SYMF, and currently accompanies the Intermediate and Preparatory choirs of Los Angeles Children’s Chorus, and the Youth Choirs at All Saints Church in Pasadena.