Well, four of them. Clip description:
When a group from The Philadelphia Orchestra found itself delayed on the tarmac for three hours waiting for their flight from Beijing to Macao as part of the 2013 Residency & Fortieth Anniversary Tour of China, a quartet of musicians decided to provide a “pop up” performance for the passengers.
Top rated comment on YouTube: “If this were in America they’d all be escorted off the plane, interrogated by the FBI, and labeled terrorists and placed on the no-fly list.”