Soundbox Strings

About Us


We are a two-person team of passionate cellists who understand the financial challenges that come with auditioning new strings. Our mission is to alleviate that burden by providing string trials, enabling fellow musicians to explore and find the perfect set without the need to invest a large sum upfront.

As musicians, we know firsthand the frustration of purchasing a full set of strings only to discover that they do not meet our expectations or suit our musical preferences. That's why we believe in the power of trial and experimentation. We want to empower musicians to make informed decisions about their instrument by offering the opportunity to test different strings for a nominal fee before committing to a purchase.

We invite you to explore our selection of strings and accessories, embark on a trial journey, and unleash the true potential of your musical expression. Join us at Soundbox and let us help you find the strings that elevate your playing to new heights.

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Cofounder & Cellist

Philo Lee


Known for his "sensitive use of dynamics and a rich, singing tone," Philo Lee has served as principal cellist in orchestras such as the Allentown Symphony, Delaware Symphony and the New Jersey Symphony Orchestra. He has also performed with the Rochester Philharmonic, Buffalo Philharmonic, and the Philadelphia Orchestra. As an active musician, some of Philo’s notable solo engagements include performances with the South Jersey Philharmonics, Adelphi Symphony Orchestra, the New Jersey Symphony Orchestra and the Delaware Symphony Orchestra where he performed the Dvorak Cello Concerto, Tchaikovsky’s Rococo Variations, Elgar Cello concerto and most recently the Haydn’s Cello Concerto in C Major. He has also performed many chamber works with various friends and colleagues throughout the United States as well as Asia. Philo Lee holds degrees from the Yale School of Music, the Juilliard School and the Manhattan School of Music. His past teachers include Brook Beazley Cyzewski, William Stokking, Ann Alton, Andre Emelianoff, Aldo Parisot, Natasha Brofsky and Alan Stepansky. As an educator, Philo enjoys teaching cellists of all age ranges and skill levels from young children to adults. In previous summers he has also served as a member of the cello faculty at Arts Ahimsa Music Festival. Currently Philo serves as a member of the New Jersey Symphony Orchestra and principal cellist of the Delaware Symphony Orchestra.

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Cofounder & Cellist

Seth Biagini


Hailing from a family of cellists, Seth begun his training in piano at age four and added the cello at age nine. Having received both his Bachelor of Music and Master of Music degrees at The Juilliard School, Seth studied with renown cellists such as Timothy Eddy, Natasha Brofsky, Alan Stepansky, and Robert deMaine. Competition accolades include Variations on a Rococo Theme by Pyotr Tchaikovsky with the Palisades Symphony Orchestra, and Dmitri Shostakovich’s First Cello Concerto with the Culver City Orchestra as well as the Pasadena Community Orchestra. His love for chamber music has led him to summer festivals, where he has spent time at Norfolk Chamber Music Festival, Kneisel Hall Chamber Music School and Festival, Taos School of Music, Aspen Music Festival and School, and Sarasota Music Festival. Having attended Aspen Music Festival and School for three years, the New York String Orchestra Seminar led by Jaime Loredo, Germany’s Schleswig-Holstein Musik Festival, and more recently, Verbier Festival in Switzerland, has given Seth the experience needed to enter the professional orchestral arena, first with Colorado Symphony and now Oregon Symphony. During the summer, Seth plays with various orchestras along the Pacific Northwest and Midwest, including Des Moines Metro Opera, Oregon Bach Festival, and Music in the Mountains.

Sarah Biagini - Creative Director & Violinist