When the ladies walk out on stage the sheer size of the choir overwhelms the judges, but quickly the impact of their performance is so profound we see Lucy and Shane reduced to tears.
The all-female choir was formed to inspire and foster community as well as raise awareness for important issues affecting women and children today.
"I wish my sons were here to witness that," and emotional Shane says in the promo.
"I wish my daughter was here and my wife was here as well," Shane continues as his voice cracks.
The voice-over promises us it will be unlike anything we've ever seen or heard before, and by the powerful reactions of the four judges, we have a feeling we won't be disappointed come Sunday.