This is a Holocaust survivor story you haven't heard. It is the story of Cantor David Wisnia, a man whose vocal talent saved him from certain death at Auschwitz. Featured in the new award-winning documentary, How Saba Kept Singing, David's story from a child in the Warsaw Ghetto to a survivor who shares his voice at the 75th anniversary celebration of the Liberation is one not to be missed. This week, Rabbi Pont speaks with David's grandson, singer/songwriter Avi Wisnia, about the truly remarkable man who was his Saba.