In The Stairwell, Semi-Finals 2

Also available on the NBC app

Is this a capella group on their way to the finals?

Available until 09/12/18
Appearing:Tyra BanksHeidi KlumHowie MandelMel BSimon Cowell
Tags: agt, America's Got Talent, AGT live shows, agt live performances, agt season 12, agt new episodes, america's got talent live, Simon Cowell, mel b, Heidi klum, Howie Mandel, Tyra Banks, agt acts live, in the stairwell, in the stairwell agt, in the stairwell live
S12 E212 minHighlightReality and Game ShowPrimetime