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The existing tab is guitar only (and having other instruments would be nice), and as some comments have mentioned, a lot of the chords and arpeggios don't seem quite right.
Just replying to say that I'd love to see more Caligula's Horse on here. I've attached a GP file with a basic setup for the song (tempo, time signatures, and I believe the correct tuning for each instrument).
I haven't done anything else for this particular song, but I have somewhat more complete files for Bloom and Firelight (and could do setups for other songs of theirs if people are interested).