video of a flash mob singing hanel s messiah at a canadian mall yesterday. well, they were not the first. look. halleleujah halleleujah halleleujah 650 seniors from 28 groups throughout the philadelphia area descended on a macy s on october 30th surprising everybody and right now, we are joined by a couple of the people involved. david duvan is the executive director of the opera company of philadelphia and maran is a long time chorus singer and join us from the city of brotherly love. good morning to you both. good morning. david, it happened at this macy s. now, this is the most unique macy s in the world because it is the home of what? it is the home of the wannamaker organ, the world s largest pipe organ. you can hear it. you can hear it. your organization has had these random acts of culture so