Hagen’s recent performances include appearances with the Rochester Philharmonic and Asheville Symphony, and performances at the Ravinia, Grant Park, Sunriver, and Santa Fe Chamber Music festivals and Tippet Rise Art Center. Hagen’s 2023-24 season highlights include performances for the Chamber Music Society of Fort Worth, Detroit Symphony, a European tour with the Amsterdam Sinfonietta, and collaborations with cellist Andrei Ioniță and pianists Orion Weiss and Albert Cano-Smit. This season William offers a new community engagement initiative that combines conversations with local gardening experts with an interactive performance and explores the ways in which music and nature are connected.

William has performed with conductor Nicolas McGegan both at the Aspen Music Festival and with the Pasadena Symphony, and made his debut with the Oregon Symphony under Carlos Kalmar, performed with the Brussels Chamber Orchestra in Beijing and at the Aspen Music Festival with conductor Ludovic Morlot, and played recitals in Paris, Brussels, and at the Ravinia Festival. Collaborations include those with Steven Isserlis at the Wigmore Hall, with Tabea Zimmermann at the Beethovenhaus in Bonn, with Gidon Kremer, Steven Isserlis, and Christian Tetzlaff in Germany, and in New York City with the Jupiter Chamber Players.

Since his debut with the Utah Symphony at age nine, William has performed with conductors such as Marin Alsop, Christian Arming, Miguel Harth-Bedoya, Michel Tabachnik, and Hugh Wolff. A native of Salt Lake City, William first heard the violin when he was 3 and began taking lessons at age 4 with Natalie Reed, followed by Deborah Moench. At age 10, he began studying with Robert Lipsett at the Colburn School in Los Angeles, where he studied until the age of 17.

After studying at the Juilliard School for two years with Itzhak Perlman, William returned to Los Angeles to continue studying with Robert Lipsett at the Colburn Conservatory. He then went on to study at the Kronberg Academy in Germany with Christian Tetzlaff. William is an alumnus of the Verbier Academy in Switzerland, the Perlman Music Program, and the Aspen Music Festival.