TTFATF
Acronym for "Through the Fire and the Flames" by Dragonforce. This song is the last song you get to play on the career mode of Guitar Hero III. The song is so long and ridiculously hard that the makers of the game made it a credits song that you can't fail the first time you play it.
F.C.P.R.E.M.I.X. is like TTFATF minus some of the satan.