Hey UG!
Already posted this in the electric guitar section, figured I should try this as well.

I've been trying to play Kingdom by The Devin Townsend Project and something about the tuning keeps confusing me. Almost every tab I've read has said the tuning is C G C G C E, but that doesn't sound right when I play the song. Other tabs have had seven string tuning when I've only seen Devin use six strings.

Can anyone help me out? I feel as if the tuning shouldn't be confusing me this much.

Anything Devy is usually some variation on CGCGCE (open C). But here's the catch. The intervals are always the same, but sometimes he tuned all the strings down (most of Addicted! is BF#BF#BF#D#), or up (Hyperdrive! is C#G#C#G#C#G#F), by some amount. Sometimes (eg SYL), he uses a seven string, which would be GCGCGCE. It's always some open major tuning, though.
do bands every deviate out of concert pitch? I heard a rumor when you detune you should alter concert pitch about 5 or 10 cents of a tone?