I just got confirmation of a friend that I have a ticket to go to the C64 Orchestra..

The Ricciotti Ensemble (Amsterdam) will be playing:
Rob Hubbard: Delta, Commando,Monty on the Run, One Man And His Droid, the Master of Magic en International Karate.
Jeroen Tel: Cybernoid II, Hawkeye, Myth en Supremacy.

And after that some dancy C64 Music by Jeroen Tel, Bas Bron, en Goto 80..

More info (Dutch): http://www.oninternet.nl/project.asp?projectId=12
Their myspace: http://www.myspace.com/c64orchestra