Yep Darmaster played guitar, it's tuned half step down and song doesn't start in G. We thought about making better recording since this is ts record, but I think it's more warm with all the flaws plus I couldn't wait for that lazy terrone to record another version in tune, he kept promising it for 3 days.
Also the other voice is same tard who's doing main vocals just in higher octave.
About "insults" well there isn't any, we all use BIM as reference to lars and other Italians and like Lars already explained "porco dio" is more like shout to God then anything else.
I hope that clarifies your deepest concerns.
I'm only sad I didn't ask phase to do back vocals, esp on the mom part.