Directors & Coaches

 Meet our awesome staff of teachers and coaches in the Portola High School Music Department!


Adrian Rangel-Sanchez

Director of Vocal Music


Desmond Stevens

Director of instrumental music

Mr. Stevens grew up in Irvine and graduated in one of the first few classes at Northwood High School when it first opened. While earning a BA in Music Education and a BA in Sociology at UCLA, Mr. Stevens traveled the globe with performing ensembles from the university. After graduating, Mr. Stevens earned his Masters in Musicology from UC Riverside where he studied the music of Latin America. Now, back in his hometown, Mr. Stevens helped open Portola High School as its first music teacher. He is now very excited to have Mr. Sanchez and Mr. Traska join in on the adventure of growing PHS into a comprehensive music program and to build a reputation of having the most respectable and innovative programs in the country.  


Kyle Traska

Director of instrumental Music

Mr. Traska joined the PHS staff in 2018. He is a native of Wisconsin and has been living and working in Southern California since the fall of 2012. Mr. Traska has worked with music ensembles in the marching, classical, jazz, rock, and world settings and is an active performing musician in the greater Los Angeles area. Mr. Traska holds a Bachelor's in Music Performance degree from Lawrence University in Appleton, Wisconsin and a teaching credential through Concordia University Irvine.


Trevor Dolce

Percussion Coach

Trevor Dolce is a Southern California based musician and teacher. He began his formal percussion studies in 2008 after being primarily self-taught on drum set. He holds a Master’s from the San Francisco Conservatory of Music and Bachelors from San Jose State University. Trevor has studied under, Jack Van Geem, Trey Wyatt, and Galen Lemon. He has performed with a wide variety of ensembles including Symphony Silicon Valley, San Francisco Contemporary Music Players, Espressivo Chamber Orchestra, Broadway by the Bay, and the California Percussion Ensemble. Trevor has coached ensembles in various high schools since 2009. Currently, he is teaching percussion at Portola High, Sage Creek High, and MiraCosta College while freelancing in the greater Los Angeles and Orange County area.


Troy Sargent

Marching Band Brass Tech & Visual Tech

As an educator, Troy has had the opportunity to serve as a Brass Caption-Head, Trumpet Section Instructor, and Guest Artist at various high schools in the Greater Los Angeles Area. As a performer, Troy has appeared at Walt Disney Concert Hall, the Segerstrom Concert Hall, L’église de la Madeleine, the Chateau de Chantilly, Bovard Auditorium, the Clayes Performing Arts Center Recital Hall, Meng Concert Hall, the Cerritos Center for the Performing Arts, Ramo Recital Hall, the Reno Jazz Festival, and the Newport Jazz Festival. Troy completed his Masters in Trumpet Performance at the University of Southern California under the instruction of Thomas Hooten and Jennifer Marotta. Prior to this, he completed a Bachelors in Trumpet Performance from California State University, Fullerton. For more information and lessons visit his website.


Sorah Myung

Violin & Viola Coach

She holds a concertmaster position at La Mirada Symphony Orchestra and an assistant principal viola position at Mozart Classical Orchestra in Southern California. As a dedicated pedagogue, Ms. Myung is in great demand as a teacher, a coach and a lecturer. She gave master classes in Suzuki violin school in Hong Kong and held an artist faculty position at Capistrano International Chamber Music Festival in San Juan Capistrano last summer. Recently she was invited to give lectures at a music college in Philippines for two weeks. Ms. Myung received her BM degree from Oberlin Conservatory of Music and MM degree from Yale University School of Music. She is currently a string faculty and a chamber music coordinator at Vanguard University in Costa Mesa and a string coach at Irvine and Laguna Beach Unified School district.