It's like that guy on the train who plays his music directly from his phone, only on a plane.
Up on the Tarmac... down by the freeway-ee-yaah..
Kari Mann was the flight attendant on a grounded USAirways flight to New Orleans when she discovered Maine barbershop quartet the Port City Sound was populating the cabin. In an effort to demonstrate how travel can always get worse, Mann asked the Sound to sing a few bars. As she explains in the video's description, "the mood changed."