Brooklyn Rider is an American string quartet, based in Brooklyn, New York City, United States, whose members include violinists Johnny Gandelsman and Colin Jacobsen, violist Nicholas Cords and cellist Michael Nicolas. They are mainly known for playing unusual and contemporary repertoire, and for collaborating with musicians from outside the classical music sphere. The quartet has founded the Stillwater Music Festival in 2006 to serve as a place to unveil new repertory and collaborations; the festival's last concerts were held in 2015. Brooklyn Rider also spends time teaching, including past residencies at Denison University, Dartmouth College, Williams College, MacPhail Center for the Arts, Texas A&M University and University of North Carolina.