Jessie Fellows is Assistant Principal Second Violin with the San Francisco Symphony. Prior to her appointment, she performed frequently with the Saint Louis Symphony and New York Philharmonic. Born into a musical family, she began her studies at the age of three under the direction of her mother in Tulsa, Oklahoma.

Jason Issokson joins the San Francisco Symphony as Associate Concertmaster, holding the San Francisco Symphony Foundation Chair, with the 2025–26 season. He has served as a member of the Los Angeles Chamber Orchestra since 2019.  Concerto highlights include engagements with the Fort Worth Symphony, Aspen Concert Orchestra, Waco Symphony, Kaleidoscope Chamber Orchestra, East Texas Symphony Orchestra, Great Falls Symphony, Abilene Philharmonic, Sendai Philharmonic Orchestra, the Orchestra di Teatro San Carlo, and the Orchestra Internazionale d’Italiae, among others.  

Over the past decade Issokson has performed extensively string quartets, first as a founding member of the Argus Quartet and subsequently as the second violinist of the Rolston String Quartet.

Issokson was awarded the top prize at the International Violin Competition “Andrea Postacchini,” third prize at the International Alberto Curci Violin Competition, and the prize for best performance of a commissioned work at the International Max Rostal Competition. Chamber music honors include first prizes at the M-Prize Chamber Arts Competition and the Concert Artists Guild Competition. 

He studied with Midori at the Manhattan School of Music and the University of Southern California. 

Leonid Plashinov-Johnson joined the San Francisco Symphony viola section at the beginning of the 2022-23 season. Previously a member of the St. Louis Symphony, he is a laureate of multiple competitions, most recently the Primrose International Viola Competition, and has participated in the Yellow Barn, Ravinia, and AIMS festivals. Born in Russia, he graduated from New England Conservatory, where he won the concerto competition.

Sébastien Gingras joined the San Francisco Symphony in 2010 and was previously a member of the New World Symphony and the Saint Louis Symphony. Mr. Gingras grew up in Chicoutimi, Québec, where he was educated at the Conservatoire de Musique. After graduating, he moved to Boston to study at New England Conservatory, where he received his master’s degree in 2005. He has participated in the Ravinia Festival’s Steans Institute and Yellow Barn.

Daniel G. Smith was appointed Associate Principal Bass of the San Francisco Symphony in 2017. He previously served as principal bass of the Santa Barbara Symphony, and he was a member of the San Diego Symphony. He has served as guest principal and associate principal bass with the Los Angeles Chamber Orchestra, and guest principal of the Lakes Area Music Festival in Brainerd, MN. Mr. Smith received his Bachelor of Music from Rice University's Shepherd School of Music under the tutelage of Timothy Pitts.

Matthew Griffith joined the San Francisco Symphony as Associate Principal and E-flat Clarinet at the beginning of the 2022–23 season. He previously served as acting assistant principal clarinet with the North Carolina Symphony and the Nashville Symphony and was a member of TŌN (The Orchestra Now), a graduate-level training orchestra based at Bard College.

Mr. Griffith has performed as guest soloist with the Boston Pops, Milwaukee Symphony, Ocean City Pops, Eastern Connecticut Symphony, United States Army Field Band, and “The President’s Own” United States Marine Band. In 2014 Yale University published The Algorithm of Jazz, a video following his experience performing Artie Shaw’s concerto with the Yale Symphony Orchestra.

After graduating from Yale University with distinction in both majors of music and computer science, Mr. Griffith earned graduate degrees in clarinet performance at the New England Conservatory. He was a Tanglewood Music Center fellow, where he was awarded the Gino B. Cioffi Memorial Prize and returned as a New Fromm Player. His teachers included Michael Wayne, David Shifrin, Todd Levy, and Jill Hanes. He grew up in Sheboygan, WI, and enjoys writing computer code and designing videogames.

Steven Dibner served as Associate Principal Bassoon of the San Francisco Symphony from 1983 until his retirement from the Orchestra at the end of last season. He previously played with the New Jersey Symphony, Orpheus Chamber Orchestra, and Metropolitan Opera Orchestra, and has performed at the Aspen and Marlboro festivals. He studied at Indiana University and the Juilliard School.

Jesse Clevenger is currently Acting Assistant Principal Horn with the San Francisco Symphony and has been assistant principal with the Houston Symphony and Sun Valley Music Festival. He has also appeared with the Chicago Symphony, Dallas Symphony, Hong Kong Philharmonic, and Toledo Symphony.

Jessica Valeri joined the San Francisco Symphony horn section in 2008. Prior to her appointment, she was a member of the St. Louis Symphony, Colorado Symphony, Grant Park Orchestra, and Milwaukee Ballet Orchestra. She has also performed with the Milwaukee Symphony, Richmond Symphony, Lyric Opera of Chicago, and the International Contemporary Ensemble, and participated in the Grand Teton Music Festival, Lakes Area Music Festival, and Mainly Mozart.

A native of Minnesota, Ms. Valeri holds degrees from the University of Wisconsin-Madison and Northwestern University, and she currently serves on the faculty at the San Francisco Conservatory of Music.

Stan Muncy joined the San Francisco Symphony percussion section in fall 2024 after serving as a frequent extra musician since 2010. He was previously a member of the Honolulu Symphony and Santa Rosa Symphony. He has also toured with the contemporary music ensemble Eighth Blackbird, participated in the Spoleto Festival and Music Academy of the West, and recorded film and video game scores at Skywalker Sound, Capitol Records, and Warner Brothers Studios.

A native of California, Muncy grew up in the Central Valley and moved to the Bay Area for college, earning a bachelor’s degree from California State University, East Bay, where he studied with Artie Storch, and a master’s degree from the San Francisco Conservatory of Music, where he studied with Jack Van Geem. During that time, he was also a member of the San Francisco Symphony Youth Orchestra. He then moved to Los Angeles, where he received a professional studies certificate from the Colburn School.

Muncy is currently a faculty member at the SFCM Pre-College and previously taught at Stanford University, UC Berkeley, and California State University, Stanislaus. He has also coached many youth orchestra percussion sections, including the SFSYO.

Jacob Nissly joined the San Francisco Symphony as Principal Percussion in 2013. Previously, he was principal percussion of the Cleveland Orchestra and the Detroit Symphony. He also spent two years as a fellow in the New World Symphony.

Nissly is chair of the Percussion Department and professor of percussion at the San Francisco Conservatory of Music. He is also a regular coach at the New World Symphony. He previously taught at the Eastman School of Music and Cleveland Institute of Music. He has served as a percussion coach for the Aspen Music Festival since 2019, National Youth Orchestra-USA, Verbier Festival, and others.

Nissly can be heard on recordings with the San Francisco Symphony and the Cleveland Orchestra. He also played drum set on the St. Louis Symphony's Grammy award-winning recording of John Adams's City Noir.
In 2019, Nissly premiered Adam Schoenberg’s percussion concerto Losing Earth with the San Francisco Symphony. He has performed the piece with the New Zealand Symphony Orchestra and the Omaha Symphony and will perform it with the Nuremberg Symphony in 2026.

Nissly holds a Bachelor of Music and Jazz Studies degree from Northwestern University and Master of Music degree from the Juilliard School. He endorses Vic Firth drumsticks, Zildjian cymbals, Kolberg percussion, and Remo drumheads.

For more on Jacob Nissly, visit sfsymphony.org/jacobnissly.