This is a snippet from "Ride across the river", from Dire Straits. Notice the distorted guitar sound at the beginning; is that sound a result of two close notes (e.g. a semi-tone or tone apart) played together, just a distortion pedal or both?
Snippet (starting at 2min40s of the full soundtrack)
Original song (roughly at the same point)
P.S. I'm not quite asking for the exact notes, since I'll not try to play that particular song. I'm just interested in how to obtain this "growly" effect.
Edit:
Just for information: I tried it at home with my keyboard and managed to find the notes. They're [F# A], [E G] in that order.
X: 1
M: 4/4
K: Em
L: 1/4
V:C name="Guitar" clef=treble-8
z3 ([f a] | [e g]
which is actually part of a VII - VI cadence (chords D - C) on the Em tonality.
I also noticed the "growl" effect of playing two notes with the overdrive distortion and the absence of that when playing just one note.