Daniel Stewart joined the San Francisco Symphony as Wattis Foundation Music Director of the San Francisco Symphony Youth Orchestra (SFSYO) in the 2019–20 season. He also currently serves as Music Director of the Santa Cruz Symphony, and has conducted the San Francisco Symphony, Metropolitan Opera Orchestra, Boston Symphony Orchestra, Los Angeles Philharmonic, Houston Symphony, Saint Louis Symphony, hr-Sinfonieorchester, Frankfurt Opera-Orchestra, and Boston Ballet, among others. 
 
Under his artistic leadership, the Santa Cruz Symphony has seen unprecedented growth and earned a reputation for innovative programming, frequent collaborations with leading international artists such as Yuja Wang and more than twenty principal singers from the Metropolitan Opera, and attracting exceptional talent to its ranks. 
 
In 2012, the Metropolitan Opera appointed Stewart the first conductor of their Lindemann Young Artist Development Program. In 2013, he made his Lincoln Center debut in a Metropolitan Opera-produced concert of scenes from comic operas by Stravinsky, Mozart, Donizetti, and Berlioz. During his tenure with the Metropolitan Opera, he coached singers and conducted the Metropolitan Opera Orchestra and soloists in a comprehensive range of the operatic repertory. 

He has worked closely with contemporary composers such as Esa-Pekka Salonen, Thomas Adès, Mason Bates, John Adams, HK Gruber, and the late Karlheinz Stockhausen. Stewart’s own compositions have been performed at the Aspen Music Festival, Tribeca New Music Festival, and the Verbier Festival. 
 
A San Francisco native, Stewart is a graduate of the Curtis Institute of Music, where he studied conducting with Otto-Werner Mueller. He has also studied with Michael Tilson Thomas, Simon Rattle, Christoph Eschenbach, and Alan Gilbert. In 2010, Stewart was awarded the Aspen Music Festival's James Conlon conducting prize. Previously a member of the SFSYO and a substitute violist for the San Francisco Symphony, he has concertized frequently as a viola soloist, and served as principal violist of numerous ensembles, including the New World Symphony, Schleswig-Holstein Festival Orchestra, and the Verbier Festival and Chamber Orchestras. He has recorded for EMI with Maxim Vengerov, and toured extensively in more than forty countries. 

San Francisco Symphony Youth Orchestra

The San Francisco Symphony Youth Orchestra is recognized internationally as one of the finest youth orchestras in the world. Founded by the San Francisco Symphony in 1981, the SFSYO’s musicians are chosen from more than 200 applicants in annual auditions. The SFSYO’s purpose is to provide an orchestral experience of pre-professional caliber, tuition-free, to talented young musicians. The more than 100 musicians, ranging in age from 12 to 21, represent communities from throughout the Bay Area. The SFSYO rehearses and performs at Davies Symphony Hall under the direction of Radu Paponiu, who joined the San Francisco Symphony as Wattis Foundation Music Director of the San Francisco Symphony Youth Orchestra in the 2024–25 season. Jahja Ling served as the SFSYO’s first Music Director, followed by David Milnes, Leif Bjaland, Alasdair Neale, Edwin Outwater, Benjamin Shwartz, Donato Cabrera, Christian Reif, and Daniel Stewart.

As part of the SFSYO’s innovative training program, musicians from the San Francisco Symphony coach the young players each Saturday afternoon in sectional rehearsals, followed by full orchestra rehearsals with Radu Paponiu. Youth Orchestra members regularly meet and work with world-renowned artists: Esa-Pekka Salonen, Michael Tilson Thomas, Herbert Blomstedt, Kurt Masur, John Adams, Yo-Yo Ma, Valery Gergiev, Isaac Stern, Yehudi Menuhin, Wynton Marsalis, Midori, Joshua Bell, Mstislav Rostropovich, Simon Rattle, and many others have worked with the Youth Orchestra. Of equal importance, Youth Orchestra members are able to speak with these prominent musicians about their professional and personal experiences, and about music. The ensemble has toured Europe and Asia, given sold-out concerts in such legendary halls as Berlin’s Philharmonie, Vienna’s Musikverein, Saint Petersburg’s Mariinsky Theater, and Amsterdam’s Concertgebouw, and won first prize in Vienna’s International Youth and Music Festival.

Radu Paponiu, Music Director

Radu Paponiu was appointed Wattis Foundation Music Director of the San Francisco Symphony Youth Orchestra at the beginning of the 2024–25 season. He recently completed a five-year tenure as associate conductor of the Naples (Florida) Philharmonic and a seven-year tenure as music director of the Naples Philharmonic Youth Orchestra. He has also served as music director of the Southwest Florida Symphony, assistant conductor of the Naples Philharmonic, and as a member of the conducting faculty of the Juilliard Pre-College.

As a guest conductor, Paponiu has appeared with the Romanian National Radio Symphony, Teatro Comunale di Bologna Orchestra, Louisiana Philharmonic, Rockford Symphony, California Young Artists Symphony, and National Repertory Orchestra. He has collaborated with soloists such as Evgeny Kissin, Yefim Bronfman, Emanuel Ax, Gil Shaham, Midori, Vladimir Feltsman, Robert Levin, Charles Yang, Nancy Zhou, Stella Chen, and the Ébène Quartet.

Born in Romania, Paponiu began his musical studies on the violin at age seven, came to the United States at the invitation of the Perlman Music Program, and later completed two degrees in violin performance at the Colburn School. He went on to earn a master’s degree in orchestral conducting at New England Conservatory, where he studied with Hugh Wolff.