There isn't. "The Hardest Song in the World" was a custom song made by (probably the one you're thinking of) bl00dblitz on YouTube. He has Guitar Hero for the PC and on the PC, you can make custom songs. You can download songs on the internet off of many sites but you need to have your disk, and 2 or three programs.
there is alot of cheats
there isn't one
guitar hero
Air Guitar mode within Guitar Hero Aerosmith is rumored to be a specific cheat code that renders your character's guitar invisible.
the rock meter will freeze and will NEVER ( unless you delete the code) deplete. it's like invincibility in guitar hero!:)
There is no autopilot cheat code.
This option is not available for Guitar Hero, note that an MP3 file (for example) does not include any code for the Guitar Hero game (so it won't know what you need to strike).
green,red,yellow,blue,yellow,red,blue,green
What type of code do you need? Guitar Hero, Rockband, Call of Duty, Halo? BE SPECIFIC.Youtube account
There is not a cheat
no there is not i have a friend that searched the whole enternet for it.
I have one gh world tour code for ps3 if u need it , i could e mail it , if u give me any other gh import code :D