 The group's first significant break came in the summer of 1957 when comedian Phyllis Diller had to cancel an engagement at The Purple Onion, a small San Francisco night club, and Werber talked the management into hiring the untested trio for a week.The trio's close harmonies, varied repertoire, and carefully rehearsed but apparently spontaneous on stage humor made them an instant success with the club's patrons, and the engagement stretched to six months.During this stint, Werber used the Kingston Trio's local popularity to try to generate interest from record companies.