During The Pirate Bay trial, Piratbyrån (The Pirate Bureau) resides in the S23K bus outside court. Every day during the first week, people could drop by with instruments at the bus and record their piece for a composition called "Düsseldorf vs Bochum". The recording was premiered at the Spectrial Kopimi Party on February 20.
This is a bootleg recording of that premiere.
More info can be found on the Spectrial site. http://trial.thepiratebay.se/