#1
Can anyone tell me what key signature is used in the majority of Primus/Claypool songs? Also, is there a list that tells what each key sounds like in terms of tone (sad, bright, etc.)? Thanks.
#2
not sure about key signatures, but they're awfully fond on using tritones, aka diminished 5th intervals
#3
They play in all different keys, so as to give their music variety.

Major keys are uplifting, minor keys are darker, or "cooler"