Crosby, Stills, and Nash (CSN) is a folk rock supergroup formed in 1968 by David Crosby, Stephen Stills, and Graham Nash. The TRIO was formed when Crosby and Nash joined forces with Stills after the break-up of his former band Buffalo Springfield. CSN is known for their intricate vocal harmonies and socially conscious lyrics. They have released eight studio albums and have been inducted into the Rock and Roll Hall of Fame.