Another random act of music in a public place — this time in Belgium, Antwerp's Central Station.

It began when passengers walking through the lobby heard a recording of "Do Re Mi," the familiar opening lines of the Julie Andrews classic from Sound of Music. As the song builds so does the participation, as it seems like everyone in the train station that day knew the choreography and provided a big group hug.

It was a promotion stunt for a Belgian television program that is looking for someone to play the leading role, in the musical of "The Sound of Music".

The seemingly spontaneous dance within a train station was a copy of a wonderful recent commercial filmed in London for T-Mobile (watch the video here).