Discover the story behind Ain't No Mountain High Enough, from Marvin Gaye and Tammi Terrell's iconic duet to Diana Ross' unforgettable solo hit.

A “Sister Act 2: Back in the Habit” reunion event show celebrating the 30th anniversary, featuring Whoopi, Kathy Najimy, Wendy Makkena, Sheryl Lee Ralph, music supervisor Marc Shaiman and composer Mervyn Warren, plus additional cast members, performances,...