It took me many many tries, but I finally beat The Devil Went Down to Georgia from the downloadable boss battle pack. For those who don't know, there's a free downloadable songpack that lets you play the boss battle songs from GH3 in single and multiplayer. The note charts are based on what the bosses play, but you play all the solo's you normally would in the battle, as well.

This song in particular is (imo) arguably just as difficult as TTFATF (intro excluded), so I'm rather pleased that I've passed it.

So yeah... That's it for now. Maybe one day I'll dedicate myself to learn how to pass the intro of TTFATF, but for now, I'm just sick of failing at 2-4%.