The Kingston Trio is an American folk and pop music group that helped launch the folk revival of the late 1950s to late 1960s. The group started as a San Francisco Bay Area nightclub act with an original lineup of Dave Guard, Bob Shane, and Nick Reynolds. It rose to international popularity, fueled by unprecedented sales of 33⅓ rpm long-playing record albums (LPs), and helped to alter the direction of popular music in the U.S.