Where can I find the scores for all these songs?

[DaFoamBeast]

I remember I found one for 600 A.D. in piano before, but now I can't find it anywhere.

Or do you even have the scores up anymore?

[DDRKirby(ISQ)]

sheet music for 600 AD in piano, as well as some other things klutz wrote, can be found at his website here.

be aware that the transcription of the sheet music is by no means perfect (for 600 AD in piano, at least), but it should give you a good base to work with.

[Souliarc]

There used to be a sticky in GenDisc for sheet music, but apparently it got pruned. A shame