Harmonix and MTV Games announced today a very special set of downloadable content to celebrate the three day Penny Arcade Expo.

The “PAX 2008 Collection”, launching on September 2, 2008, contains tracks from celebrated nerd-folk artist Jonathan Coulton, nerdcore rapper MC Frontalot, and lovecraftian doomsayers The Darkest of the Hillside Thickets - all of whom will be performing at the gaming fan festival August 27th-29th. Adding to the fan-focused celebration, the Harmonix/MTV Games’ proceeds from the sale of this “PAX Pack” between launch and Holiday 2008 will be donated to the Penny Arcade run Child’s Play Charity in order to help out children’s hospitals around the world.

“We’re excited that some of our favorite artists can be featured in Rock Band as a result of this pack,” said Robert Khoo, Show Director for Penny Arcade Expo. “Calling attention to PAX artists and giving back to the community at the same time show why Harmonix is truly a company focused on the music and their fans above all else.”

The pack includes "Skullcrusher Mountain" by Jonathan Coulton, the story of a misunderstood genius and the woman he attempts to woo with monstrous creations like a half-monkey, half-pony, "Livin’ on the Corner of Dude and Catastrophe" by MC Frontalot, Inspired by the award-winning webcomic "Achewood" and featuring Brad Sucks, and finally "Shhh...." by Darkest of the Hillside Thickets, a previously unreleased track that the nerd rockers have brought exclusively to Rock Band.

Release Date: Tuesday, September 2, 2008 (Xbox LIVE Marketplace for Xbox 360)
Thursday, September 4, 2008 (Playstation Store)

Tracks: Jonathan Coulton “Skullcrusher Mountain”
MC Frontalot “Livin’ on the Corner of Dude and Catastrophe”
Darkest of the Hillside Thickets “Shhh….”

Price: .99¢ (80 Microsoft Points for Xbox 360) per track
$2.99 (240 Microsoft Points for Xbox 360) for 3 pack
(All three tracks utilize the original master recordings)