Tony Awards performance: Fantasia, Gladys Knight and Patti LaBelle join 'After Midnight' cast (Video)
The musical revue "After Midnight" tells the story of Harlem's Cotton Club with a blend of song and dance. Part of the continued appeal of this toe-tapping tuner, which reaped seven Tony nominations including Best Musical, is the revolving parade of guest stars. Three of these -- "American Idol" winner Fantasia and R&B divas Gladys Knight and Patti LaBelle -- joined the cast for a performance of that took t…