well originally, they were played in C# standard tuning for guitar, but i noticed that they are playing them a semitone higher in D standard on the chaos ridden years dvd, because i also noticed that alexi didn't switch guitars meaning he still was in D standard and i'm not sure about the other shows, but this is what i can hear on the dvd. Is it because they don't have enough guitars to tune down to C# standard? or is it just not convenient?