20 tracks of Philly girl-group greatness, including all nine of their chart hits! Includes the Wah-Watusi; Don't Hang Up; South Street; Not Me; Cross Fire!: Bon-Doo-Wah; Shimmy Shimmy; Rules of Love; Knock! Knock! (Who's There?); I'll Be True; the Conservative; Cement Mixer; Don't Throw Your Love Away, and more.