Seen in Berlin

[Guy Glorieux <guy.glorieux@xxxxxxxxx>]

Seen in Berlin yesterday 
in the Hallway of the Philharmonic  building 
this huge and hilarious picture (dated 2005) by photographer Martin Liebscher

http://www.martinliebscher.com/pages/familie/philharmonie2.htm

There is only a single person acting all together as 
the chef d'orchestre, the individual musicians of the orchestra and the public
staged in the most unpredictable positions
and obviously adding up to several hundred people.
 
Does anybody know about this fellow?

Regards,

Guy