Here are two other projects with time parameters.
On the short side:
Drown Radio's "Crate Digger Deathmatch"
http://www.drownradio.com/crate-digger-deathmatch
Artist we're given 12 hours to purchase, sample and create a track.

On the long side:
V/Vm's 365 Project
http://brainwashed.com/vvm/micro/vvmt365/index.htm
V/Vm created at least one new composition for everyday of a year of 2006.

Title:
%20 & MediaDefender & New York Attorney General’s Office & Randy Saaf & Celine Dion - “Taking Chances” (thee Media Saaf-iee Way)

Location : http://noneinc.com/sound/
File Name : %20&MediaDefender&NYAG&RandySaaf&CelineDion-TakingChances.mp3
Additional Info : http://noneinc.com/sound/%20ReadMe/TakingChances-ReadMe.txt

Yours when downloaded,
%20
Consumer Whore
Corporate Shill
Wannabee Cultural Chimera
Part time music fan

Hello, my name is %20 and I collect interdicting spoofing noise files created by entities like Overpeer and MediaDefender. They are important 'art' objects which are in dire need of preservation. I had thought the methods and products died out when Overpeer went kaputz, but there are several e-mails in this collection which revive my search and preservation of these outstanding works of questionable merit. So if you happen to get a file from these folks which seems a little off, read this blog: http://noneinc.com/RIAAEM/RIAABlog.html [noneinc.com] and we'll host them for everyone to enjoy.
TIA!
%20