Activision will release the Virtuoso Pack for Guitar Hero 3 on Xbox Live and PlayStation Store this Thursday.
The pack is made up of three songs from accomplished shredders: "Surfing with the Alien" by Joe Satriani, "For the Love of God" by Steve Vai, and "Soothsayer" by Buckethead.
There's a bonus Buckethead song called "Jordan" available in the Guitar Hero 2 area if you want a taste of what to expect. On Xbox 360 you get an Achievement for beating it on Expert. We can only finish it on Hard.
Anyway, you may remember Steve Vai for his "Halo Theme (Mjolnir Mix)" in Halo 2. You can download this as a free add-on for the Xbox 360 version of Guitar Hero 3.
For which, of course, Track Packs cost 500 Microsoft Points (GBP 4.25 / EUR 6.00) on Xbox Live and GBP 3.99 on the PlayStation Store.