Orion joined the San Francisco Symphony in 2024, after previous engagements with the London Symphony Orchestra, the Houston Symphony, and with the Royal Concertgebouw Orchestra at Carnegie Hall. Miller began playing cello at the age of three and switched to bass at age 11. Awarded a National YoungArts Foundation prize, Miller earned a bachelor’s degree from the Shepherd School of Music at Rice University. He has been a fellow at the Tanglewood Music Center, Music Academy of West, and Aspen Music Festival.