While this is by no means an official additional of Zebrahead to the Guitar Hero franchise (though we all know it's long overdue), thanks to one of the awesome new features in Guitar Hero: World Tour, known as GH Tunes, you can now play along to a Zebrahead song! GH Tunes essentially lets users create their own songs for others to also download for free, and a very clever guy who goes by the name of "The Startled" has created Zebrahead's "Wake Me Up" which you can download for free.
If you have a copy of the game for the Nintendo Wii platform, then head on over to GH Tunes and you'll find the tune slowly clibming it's way up the Top 20 All Time Rated tunes!
Or if you simply want to hear what it's like then head on over to the GH Tunes website where you can stream it in your browser! Good job indeed! Can anyone else do better? Let us know!