Kronos Quartet is one of the most fascinating, innovative, and long-standing musical groups of San Francisco. The neoclassical string group was formed in Seattle in 1973 by violinist David Harrington. When Harrington moved to San Francisco in 1978, the band stayed together, and now, 43 years later, still includes three of the four original members (Harrington, John Sherba on violin, and Hank Dutt on viola).
Most people, myself included, learn about Kronos through their collaborations with other artists and composers. They've worked with everyone from minimalist composer and keyboardist, Phillip Glass to hippy, psychedelic composer Terry Riley to Bollwyood singer Asha Bhosle. (Also worth mentioning: David Bowie, Nelly Furtado, Dave Matthews Band, and Paul McCartney.) In other words, even though Kronos is a string quartet, they're extremely versatile, experimental, and open to new things. (Which, in the world of classical music, is more than a little rare.)