Guitar Hero World Tour Songs:
http://en.wikipedia.org/wiki/Guitar_Hero_World_Tour
It's too hard to copy all those songs and artists, so just scroll down to see.
Songs I know on GHWT:
Dammit by Blink-182
Eye of the Tiger by Survivor
Hotel California by Eagles
In the End by Linkin Park
Low (Travis Barker Remix)
What I've Done by Linkin Park
Search for Low(Travis Barker Remix) on Youtube. BTW, Barker is a drummer for Blink-182 and now +44. The song sounds kinda cool, since it's more rock than hip-hop.
List of Rock Band 2 Songs:
http://en.wikipedia.org/wiki/List_of...in_Rock_Band_2
Songs I know on RB2:
Eye of the Tiger by Survivor
My Own Worst Enemy by Lit
Nine in the Afternoon by Panic at the Disco
One Step Closer by Linkin Park
The Middle by Jimmy Eat World
Threaded Mode