For more than 40 years, San Francisco’s Kronos Quartet—David Harrington (violin), John Sherba (violin), Hank Dutt (viola), and Sunny Yang (cello)—has combined a spirit of fearless exploration with a commitment to continually reimagine the string quartet experience. In the process, Kronos has become one of the world’s most celebrated and influential ensembles, performing thousands of concerts, releasing more than 60 recordings, collaborating with an eclectic mix of composers and performers, and commissioning over 900 works and arrangements for string quartet. They have won over 40 awards, including a Grammy Award and the prestigious Polar Music and Avery Fisher Prizes. The nonprofit Kronos Performing Arts Association manages all aspects of Kronos’ work. In 2015, Kronos launched Fifty for the Future: The Kronos Learning Repertoire, an education and legacy project that is commissioning—and distributing for free—the first learning library of contemporary repertoire for string quartet.