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.