Now this is a Marché!
Last month at the central market in Valencia, Spain, opera singers disguised as shopkeepers were selling produce at the various stalls there.

Suddenly Verdi's Il Travatore starts playing over the loudspeakers & they burst into song. None of the shoppers has a clue what was going on. Sort of like candid camera but completely charming.

Watch and enjoy the music and the faces in the crowd.