Fattest of respects paid to Angelo Badalamenti. I think David Lynch said that the guitar was pitch shifted or slowed down to sound like a baritone, and wasn't actually a baritone or a bass IV. I can't remember the source though. Gotta shout out my favorite Bass IV player though. David Gilmour.
I believe it was some sort of country guitar twang sample that someone who programmed the synths had laying around, can't recall where I heard it though
I heard Godzilla recorded the track with the devil's own fiddle onto an Edison wax cylinder that was then sampled by Tupac and played in reverse for Angelo at a party.