the pcpunk soundgame is from noisegames.com, click on the images above to play some more noisegames.
Instructions: Switch Drum Dog on and off.
Top row Buttons are for guitar riff loops, switch between loops. (these are on/off buttons)
Middle row Buttons are for singing and shouting. Bottom row buttons are for solo guitar.
Desktop Punk Rock
Here's a new game from the same folks who brought us the addictive shower-singing program: Use your mouse or keyboard to play punk music during the workday. The feature gives us pretty much all we need to make noise: drums, vocals, rhythm and lead guitar. It explains the lack of one instrument by saying "the bass player didn't turn up today." Whitney Matheson, Pop Candy, USA Today, 09-04-2007