PAX Pack coming to Rock Band

Next week, Rock Band is coming out with a PAX pack of songs from artists playing at PAX this year. The pack includes:

+ "Skullcrusher Mountain" - Jonathan Coulton.
+ "Livin' on the Corner of Dude and Catastrophe" - MC Frontalot.
+ "Shhh…." - the Darkest of the Hillside Thickets.

The pack is 240MS points, or $3. All of the tracks are master recordings, and the song by the Darkest of the Hillside Thickets is a previously unreleased track. And, if that wasn't enough, all of the proceeds from the sales are going to Child's Play.