At 2:33 p.m. on May 2, 2011, members of the Copenhagen Philharmonic in street clothes participated in an unannounced orchestral flash mob, assembling to play Ravel's "Boléro" (1928) and then, their revels ended, melting back into the crowd like an insubstantial pageant faded, leaving not a (music) rack behind.[1]  --  The piece is seventeen minutes in length but in the video is shortened to under five minutes.  --  The conductor in blue is the Swedish composer Jesper Nordin.  --  In a performance like this, members of the audience become as fascinating as the musicians....


1.

FLASH MOB AT COPENHAGEN CENTRAL STATION.  COPENHAGEN PHIL PLAYING RAVEL'S BOLÉRO

YouTube
May 27, 2011

http://youtu.be/mrEk06XXaAw

As one of the first professional symphony orchestras ever Copenhagen Phil (Sjællands Symfoniorkester) did a flash mob at Copenhagen Central Station on May 2nd 2011 playing Ravel's Boléro.  Conductor is Jesper Nordin.