On the afternoon of December 9, 2025, violinist Jennifer Chia-Hua Hsieh received a call from the San Francisco Ballet’s personnel manager. A first violinist had dropped out of that evening’s performance of The Nutcracker at the War Memorial Opera House. Could she step in? The curtain was going up in a few hours. Hsieh said yes, grabbed her violin, and walked into the orchestra pit to sight-read Tchaikovsky’s full two-hour score — live, in front of a packed house, without a single rehearsal.
Five days later, on December 14, it happened again. Another last-minute call, another vacant chair. She returned to the same pit, sat in the second violin section, and played the entire show from scratch a second time.
The Musician Orchestras Call at the Last Minute
The War Memorial Opera House is no ordinary venue. Opened in 1932, it has served as the home of the San Francisco Opera and the San Francisco Ballet, and its stage has witnessed everything from world premieres to the signing of the United Nations Charter. The Grammy Award-winning San Francisco Ballet Orchestra performs Tchaikovsky’s iconic score live beneath the dancers each holiday season, and the 2025 run marked the production’s 21st revival. Audiences pay up to $449 a ticket. The artistic stakes are immense.
Hsieh’s ability to walk into that environment and deliver a polished performance on zero notice is what sets her apart. Sight-reading — the act of performing music one has never practised — is considered one of the most demanding skills a musician can possess. It requires instantaneous decoding of notes, rhythms, dynamics, and phrasing, all while maintaining intonation and musical expression. Performing an entire ballet adds another layer: the tempo bends and flexes with the dancers onstage, and the musician must react to unmarked changes in real time.
“To sight-read the entire Nutcracker is difficult because you need to read two hours of music and perform everything correctly, but you also have to stay flexible and adjust to the dancers’ tempo, or any nuances that are not marked in the music,” Hsieh said. She has been the San Francisco Ballet’s trusted substitute violinist since 2018. Personnel managers count on her to jump into the pit when another player falls ill or is unable to make it. There is no safety net. The lights go down, the conductor raises the baton, and Hsieh plays.
A Career Built on Trust
Hsieh holds a tenured position in the first violin section of the San Francisco Opera Orchestra, a seat she won through a rigorous national audition in 2017. Earning tenure in a major American orchestra is fiercely competitive — candidates survive multiple blind audition rounds and a demanding probationary period before being granted permanent membership. She has since won spots as a regular substitute for both the San Francisco Symphony and the San Francisco Ballet, a trifecta that places her at the centre of the city’s classical music world.
Her career before San Francisco reads like a cross-continental itinerary. She served as a Fellow at the New World Symphony in Miami, a training orchestra founded by Michael Tilson Thomas. She was invited to the Verbier Festival Orchestra in Switzerland three consecutive years — 2013, 2014, and 2015 — one of the world’s premier classical music gatherings, where she played under conductors such as Charles Dutoit and alongside soloists such as Yuja Wang.
The Houston Symphony brought her on their 2018 European tour, and in 2023, the San Francisco Symphony selected her for their European tour with music director Esa-Pekka Salonen, performing works by Bartók, Barber, and Rachmaninoff. “I have been offered work consistently from these top orchestras, and being selected to perform on international tours has been a significant milestone in my career,” Hsieh said.
More Than a Safety Net
What makes Hsieh’s sight-reading ability rare is its reliability under pressure. Substitute musicians in professional orchestras face what many consider the hardest job in music. The sub walks into an ensemble that has already rehearsed together, sits among colleagues who know every breath and bow change by heart, and must perform at an identical level — often with minimal preparation. Most orchestral substitutes receive at least a day’s notice. Hsieh has built her reputation on performing without it.
Her range stretches well beyond the orchestral pit. She joined the Candlelight Concert Series in 2025, performing pop and rock string quartet arrangements at unconventional venues across San Francisco. One May 2025 assignment asked her to perform thirteen Fleetwood Mac songs with three strangers — after just one hour of rehearsal. The performance was successful, and more bookings followed. Hsieh was asked to serve as a judge for a national audition, where she evaluated candidates. She now assesses the very qualities she has spent her career perfecting: technique, musicality, and the ability to adapt under pressure.
Back at the War Memorial Opera House on those two December evenings, the audience had no idea a substitute sat in the violin section. The Nutcracker unfolded with its usual holiday splendour — Tchaikovsky’s effervescent score swelling beneath the dancers, the Snow Scene shimmering, the Sugar Plum Fairy pirouetting. Jennifer Hsieh turned pages she had never seen before and played every note as though she had rehearsed them for weeks. That is the job. She just happens to be extraordinarily good at it.
