I’m a big fan of Improv Everywhere and their random events, especially their musicals. Here’s a whole different spin on this.
Macy’s in Philadelphia is in the Wanamaker Building which is the only department store I know of that has its own pipe organ. This is the store the movie Mannequin was filmed in. It’s huge with a huge multi-story atrium. It’s a real neat place to visit if you are ever in Philadelphia.
Recently, 600 choristers from a number of local choirs mingled with the crowds and broke into the Hallelujah chorus from Handel’s Messiah. They are the folks with the buttons on in the video below. Enjoy!